The Complete Claude Guide: Features, Skills, Projects, Artifacts and How to Use Claude Effectively

How to Use Claude Effectively — Everything in One Place

Most people use Claude like a search engine. They type a question, read the answer, and close the tab.

That is using maybe 10% of what Claude can actually do.

Claude has projects with persistent memory, artifacts that generate live code and documents, custom instructions that shape every conversation, skills for specific workflows, and prompting patterns that produce dramatically better results than a plain question ever will.

This guide covers everything — from the basics to the advanced features that most users never discover. Whether you are a developer, a founder, a writer, or a student, there is a workflow in here that will change how you use Claude every day.

🎯 Quick Answer (30-Second Read)

Claude.ai is the main interface — web, iOS, and Android apps available
Projects give Claude persistent memory and custom instructions across conversations
Artifacts generate live, interactive code, documents, and visualisations inside the chat
Custom instructions shape Claude's tone, format, and behaviour for every conversation
Skills are Claude's built-in capabilities — coding, analysis, writing, research, math, and more
Best prompting pattern: Context + Task + Format + Constraints = dramatically better output
Power user move: Use Projects for ongoing work so Claude remembers your stack, preferences, and context

What Claude Actually Is

Claude is an AI assistant built by Anthropic. Unlike a search engine that retrieves existing content, Claude reasons, writes, codes, analyses, and creates — generating responses from scratch based on your input and its training.

The key distinction from other AI tools is Claude's approach to helpfulness and safety. Constitutional AI training means Claude is designed to be genuinely useful without being sycophantic — it will push back on bad ideas, acknowledge uncertainty, and tell you when it does not know something rather than confidently hallucinating an answer.

Claude is available across multiple surfaces:

Claude.ai — the main web interface at claude.ai
Claude iOS app — full feature parity with the web interface
Claude Android app — full feature parity with the web interface
Claude API — for developers building applications on top of Claude
Claude Code — terminal-based agentic coding tool
Claude in Chrome — browser extension for in-page assistance
Claude in Excel and PowerPoint — Microsoft Office integrations

Claude Plans — What You Get at Each Tier

Feature	Free	Pro ($20/mo)	Max ($100/mo)
Claude Sonnet access	✅ Limited	✅ Full	✅ Full
Claude Opus access	❌	✅	✅ Extended
Projects	❌	✅	✅
Artifacts	✅	✅	✅
File uploads	✅ Limited	✅	✅
Priority access	❌	✅	✅
Claude Code usage	Limited	Included	Extended
Message limits	Low	Higher	Highest
Best for	Casual use	Daily professional use	Power users, developers

Projects — Claude's Most Underused Feature

Projects are the single biggest quality-of-life upgrade in Claude. Most users who discover them do not go back to regular conversations for any ongoing work.

A Project is a persistent workspace where Claude remembers:

Everything you have told it about your context
Your custom instructions for that project
Every file you have uploaded
Every conversation you have had within the project

How to Create a Project

Open Claude.ai and click Projects in the left sidebar
Click New Project
Give it a name — be specific: "SaaS Product Blog" not "Writing"
Add Project Instructions — this is your persistent system prompt
Upload any reference files — codebases, brand guidelines, research docs
Start conversations — Claude remembers everything across every chat in this project

What to Put in Project Instructions

Project instructions are the most powerful lever in Claude. Write them like you are onboarding a new team member:

You are helping me build a SaaS product called [name] targeting [audience].

Tech stack: Next.js 14 App Router, Supabase, Stripe, Tailwind, TypeScript strict mode.
Package manager: pnpm — never suggest npm or yarn.
Testing: Vitest + React Testing Library.
Style: named exports only, no default exports except Next.js pages.

Tone for all writing: direct, no fluff, developer audience.
Format code responses with TypeScript types always included.
When I share an error, diagnose root cause before suggesting a fix.
Never suggest installing a new dependency without flagging it explicitly.

The more specific your project instructions, the less you have to re-explain in every conversation. Claude reads these before every response.

Project Use Cases

For developers:

One project per codebase — upload key files, document your stack, set coding conventions
Claude knows your architecture before you ask the first question

For writers:

Upload brand guidelines, past articles, style references
Claude maintains consistent voice across every piece

For founders:

Document your business model, target customer, competitive landscape
Every strategy conversation starts with full context

For researchers:

Upload papers, notes, and research questions
Claude synthesises across everything in the project

Artifacts — Live Documents Inside Your Chat

Artifacts are one of the most visually impressive features in Claude and the one that surprises new users most.

When Claude generates certain types of content — code, HTML, React components, SVG graphics, Markdown documents — it can render them as a live, interactive preview alongside the chat. You do not just get text describing a UI component. You get the component, running, right there in the conversation.

What Claude Can Generate as Artifacts

React components — functional components with hooks, rendered live in the preview panel. Click buttons, fill forms, see state updates — all inside the chat.

HTML pages — full web pages with CSS and JavaScript, rendered as a live preview. Great for landing page mockups, email templates, interactive tools.

SVG graphics — vector illustrations, diagrams, charts, icons — rendered and downloadable.

Mermaid diagrams — flowcharts, sequence diagrams, entity relationship diagrams, rendered from Mermaid syntax.

Markdown documents — formatted documents, reports, README files — rendered with full formatting.

Code files — syntax-highlighted code in any language, ready to copy.

How to Trigger Artifacts

You do not need a special command. Just ask for something that naturally produces one:

Build a React component for a pricing table with three tiers.
Create an SVG icon for a database symbol.
Generate a Mermaid flowchart of a user authentication flow.
Write a markdown README for a Next.js project.
Make an interactive todo list in HTML with localStorage.

Claude decides when an artifact is appropriate. For shorter code snippets that are part of an explanation, it keeps them inline. For standalone, usable outputs, it creates an artifact.

Iterating on Artifacts

The real power is iteration. After Claude generates an artifact:

Make the pricing table dark themed.
Add a fourth tier for enterprise.
Make the todo list save to localStorage.
Add animation to the SVG icon.

Claude updates the artifact in place. You are building something iteratively, visually, without leaving the chat.

Claude's Core Skills — What It Actually Does Well

Coding

Claude is one of the strongest coding assistants available. It handles:

Code generation — write functions, components, classes, APIs from description
Debugging — paste an error and get root cause analysis, not just a fix
Code review — upload a file and get line-by-line feedback
Refactoring — restructure code while preserving behaviour
Test generation — write unit, integration, and E2E tests for existing code
Documentation — generate JSDoc, docstrings, README files, API docs
Architecture advice — describe a system and get design pattern recommendations

Languages Claude handles well: TypeScript, JavaScript, Python, Rust, Go, Java, C++, SQL, Bash, and most others.

Best practice for coding tasks:

Context: I am building a Next.js 14 API route using the App Router.
My database is Supabase with this schema: [paste schema]
Task: Write a route handler for POST /api/users that creates a new user,
validates input with Zod, and returns the created user.
Constraints: Use TypeScript strict mode. Handle errors with a custom
AppError class. Never expose the Supabase service role key.

Writing and Editing

Claude writes and edits across every format:

Blog posts, articles, technical documentation
Emails, Slack messages, LinkedIn posts
Product copy, landing pages, marketing materials
Research reports, executive summaries, proposals
Creative writing, fiction, scripts

The key to good writing output is giving Claude a voice reference. Paste a sample of writing you like — or your own writing — and ask it to match the style.

Here is a sample of how I write: [paste 3-4 paragraphs]
Write a LinkedIn post about [topic] in this exact voice and style.
Keep it under 200 words. No bullet points.

Analysis and Research

Claude can analyse documents, datasets, arguments, and ideas:

Document analysis — upload PDFs, paste long texts, get summaries and insights
Data interpretation — paste CSV data or describe a dataset, get analysis
Argument evaluation — present a position, get steelmanned and critiqued
Competitive analysis — describe a market, get structured comparison
Literature synthesis — share multiple sources, get synthesised takeaways

Math and Reasoning

Claude handles mathematical reasoning, logic problems, and structured thinking better than most AI tools. For complex multi-step problems, ask Claude to show its work:

Solve this step by step, showing your reasoning at each stage.
Check your answer at the end.

Custom Instructions — Shape Claude's Default Behaviour

Custom instructions (available in Settings → Profile) apply to every conversation across Claude — not just within a specific project.

Use them to set defaults you always want:

About me:
I am a senior full-stack developer building SaaS products.
I prefer TypeScript, Next.js, and Supabase.
I value directness — skip preamble and get to the answer.

How I want Claude to respond:
- Lead with the answer, then explain if needed
- Use code examples whenever relevant
- When I share an error, identify root cause first
- Do not suggest I "consult a professional" for technical questions
- Keep responses concise unless I ask for depth
- Use British English spelling

The difference between a user with good custom instructions and one without is significant. Every response is calibrated to your context before you say anything.

File Uploads — What Claude Can Read

Claude can read and analyse files you upload directly in the conversation:

File Type	What Claude Can Do
PDF	Extract text, summarise, answer questions, find specific information
Images (PNG, JPG, WEBP)	Describe, analyse, extract text, identify elements
CSV	Analyse data, identify patterns, suggest visualisations
Text files (.txt, .md)	Read, summarise, edit, reformat
Code files	Review, debug, refactor, document
Word documents (.docx)	Read and analyse content

Upload limits vary by plan. Pro users can upload larger files and more of them per conversation.

Prompting Patterns That Get Better Results

The difference between a mediocre Claude response and an excellent one is almost always in the prompt, not the model.

The CTFC Framework

Every strong prompt has four elements:

Context   — who you are, what you are building, relevant background
Task      — exactly what you want Claude to do
Format    — how you want the output structured
Constraints — what to avoid, limits, requirements

Weak prompt:

Write a blog post about React hooks.

Strong prompt:

Context: I write a technical blog for senior developers. My readers
know React well and find beginner content boring.
Task: Write a 900-word blog post about the useCallback and useMemo
hooks — specifically the common mistakes developers make when using them.
Format: Lead with a code example showing the mistake, then explain
why it is wrong, then show the correct approach. Use H2 headers.
Constraints: No "Introduction" header. No "Conclusion" header.
No filler sentences. Code examples in TypeScript.

Ask Claude to Think Before Answering

For complex reasoning tasks:

Before answering, think through this step by step.
Consider edge cases. Then give me your final answer.

Use XML Tags for Structured Input

When giving Claude complex context, XML tags help it parse information clearly:


I am building a SaaS product targeting freelance developers.
Current MRR: $3,200. Churn: 4% monthly.



Identify the three highest-leverage things I should focus on
to reach $10K MRR in 6 months.



I have no budget for paid acquisition. I work on this part-time.

Iterate, Do Not Regenerate

When Claude's output is close but not perfect, iterate rather than restarting:

Good start. Three changes:
1. Make the tone less formal — write like you are talking to a colleague
2. Cut the third paragraph — it repeats what was in the second
3. Add a concrete example after the fourth paragraph

This is faster and produces better results than regenerating from scratch.

My Take — How I Actually Use Claude Every Day

I have been using Claude daily for over a year and the thing I keep coming back to is that it rewards specificity in a way that most tools do not. The more context you give it, the more it feels like talking to someone who actually understands your situation rather than giving you a generic answer.

The feature that changed my workflow most is Projects. Before Projects, every conversation started from zero — I was re-explaining my tech stack, my writing style, my constraints, every single time. Now I have a project for every major thing I work on. Claude knows my stack before I ask the first question. That time saving compounds across hundreds of conversations.

What I think most people get wrong about Claude is treating it like a vending machine — put in a question, get out an answer. The better mental model is that Claude is a thinking partner. The more you share your reasoning, your constraints, your half-formed ideas, the more useful the output becomes. The worst prompts are the ones that give Claude no context and then complain the output is generic.

The future I am most interested in is Claude's memory getting better. Right now Projects solve the cross-conversation memory problem for work you explicitly set up. But the ideal is Claude that remembers the context of everything you have ever discussed — your preferences, your ongoing projects, your thought patterns — without you having to manage it manually. That is the version that starts to feel less like a tool and more like a genuine collaborator.

The skill worth developing right now is not knowing which AI tool to use. It is learning how to give any AI enough context to be genuinely useful. That skill transfers across every model and every interface that gets built on top of them.

Advanced Claude Features Worth Knowing

Voice Mode

Claude supports voice input on mobile — tap the microphone icon to speak your prompt. Useful for hands-free brainstorming, quick questions, or when typing is inconvenient.

Sharing Conversations

Individual conversations can be shared via a public link. Useful for sharing Claude's output with teammates, clients, or for reference.

Regenerating Responses

Click the regenerate icon below any Claude response to get a different version. Useful when the first response is in the right direction but not quite right.

Stopping Mid-Response

Click the stop button to halt Claude mid-generation. Then follow up with what was missing rather than waiting for a complete response you will regenerate anyway.

Model Selection

On Pro and Max plans, you can switch between Claude Sonnet (faster, lower cost) and Claude Opus (more capable, slower) per conversation. Use Sonnet for routine tasks and Opus for complex reasoning, nuanced writing, or difficult analysis.

Frequently Asked Questions

What is the difference between Claude and ChatGPT?
Both are large language model assistants, but they differ in training approach, personality, and behaviour. Claude is trained with Constitutional AI, making it more likely to acknowledge uncertainty, push back on bad ideas, and maintain consistent behaviour across edge cases. ChatGPT tends to be more agreeable. For coding, both are strong — Claude is often preferred for longer, more complex tasks. For creative writing, Claude's voice is generally considered more natural and less generic.

Does Claude remember previous conversations?
By default, Claude does not have memory across separate conversations — each new chat starts fresh. Within a Project, Claude has access to everything in that project including past conversations and uploaded files. The memory feature, when enabled in settings, allows Claude to remember facts across conversations outside of Projects.

Can Claude access the internet?
Claude has a web search tool available in Claude.ai that can be enabled per conversation. When web search is on, Claude can look up current information, recent events, and real-time data. When it is off, Claude relies on its training data with a knowledge cutoff.

Is Claude good for coding?
Yes — Claude is consistently rated among the top AI coding assistants. It handles multi-file context well, gives strong debugging analysis, and writes idiomatic code in most languages. For the best coding results, give Claude your full context — the framework, the error message, the surrounding code, and the specific behaviour you want.

How do I get Claude to stop adding unnecessary caveats?
Add this to your custom instructions or your prompt: "Do not add disclaimers, caveats, or suggestions to consult professionals unless I specifically ask for them. Give me direct answers." This dramatically reduces hedging on topics where you want a straight answer.

Conclusion

Claude is not a search engine and it is not a chatbot in the traditional sense. It is a reasoning engine that gets dramatically more useful the more context and structure you give it.

Start with Projects if you have any ongoing work — the persistent memory and custom instructions alone will change how useful Claude feels within the first week. Use Artifacts when you need something you can see and interact with, not just read. Write better prompts using the CTFC framework — context, task, format, constraints.

The gap between a casual Claude user and a power user is not intelligence or technical skill. It is knowing how to give Claude enough context to be genuinely useful — and that is a learnable skill that pays off every single day.