Cursor AI Guide 2026: Complete Tutorial & Tips

What is Cursor?

Cursor is an AI-first code editor built as a fork of VS Code. Unlike AI coding assistants that bolt onto existing editors, Cursor reimagines the development experience with AI at its core. Its standout feature, Composer, enables multi-file editing through natural language conversation.

This guide covers everything you need to become productive with Cursor, from basic setup to advanced techniques used by power users.

Getting Started

Installation

Download Cursor from cursor.sh. It's available for macOS, Windows, and Linux. The installer handles everything - no additional setup required.

Importing VS Code Settings

On first launch, Cursor offers to import your VS Code configuration. Accept this to bring over:

• All installed extensions
• Themes and color schemes
• Keybindings and shortcuts
• User settings and preferences

Essential Keyboard Shortcuts

Memorize these shortcuts to work efficiently with Cursor:

Core Features

Tab Completion

Cursor's Tab completion goes beyond simple autocomplete. It analyzes your codebase, recent edits, and cursor position to suggest contextually relevant code. Key behaviors:

• Multi-line suggestions: Tab can complete entire functions, not just single lines
• Pattern learning: It learns your coding patterns and adapts suggestions
• Partial acceptance: Use Cmd+Right Arrow to accept word by word
• Rejection learning: Rejecting suggestions helps improve future ones

Inline Edit (Cmd+K)

Select code and press Cmd+K to edit it in place with natural language instructions. Examples:

• "Add error handling"
• "Convert to async/await"
• "Add TypeScript types"
• "Optimize for performance"
• "Add JSDoc comments"

Inline edit is perfect for focused changes to a single block of code. For changes spanning multiple files, use Composer instead.

Chat (Cmd+L)

The chat sidebar lets you have conversations about your code. Unlike inline edit, chat is for exploration and understanding rather than direct code changes.

Effective chat uses:

• Understanding unfamiliar code: "Explain what this function does"
• Debugging: "Why might this throw a null pointer exception?"
• Architecture: "What's the best pattern for handling this?"
• Learning: "How does React's useEffect cleanup work?"

Pro tip: Use Cmd+Shift+L to add selected code to the chat context before asking questions.

Composer (Cmd+Shift+I)

Composer is Cursor's killer feature - multi-file editing through conversation. Open Composer and describe what you want to build or change. Cursor will:

1. Analyze relevant files in your codebase
2. Propose changes across multiple files
3. Show you a diff of all changes
4. Apply changes with your approval

Composer Best Practices

• Be specific: "Add user authentication using JWT with refresh tokens" is better than "Add auth"
• Reference files: Use @filename to include specific files in context
• Iterate: Start broad, then refine with follow-up messages
• Review diffs: Always review proposed changes before accepting

Codebase Indexing

Cursor indexes your entire repository for semantic understanding. This enables features like:

• @codebase queries: "Where is user authentication handled?"
• Accurate refactoring: Cursor knows all usages of a function
• Context-aware suggestions: Completions match your codebase patterns

Indexing Settings

Configure indexing in Settings → Features → Codebase Indexing:

• Excluded patterns: Add node_modules, build folders, etc.
• Reindex: Trigger manually after major changes
• Index status: Check if indexing is complete

Advanced Techniques

Using @ Mentions

@ mentions add specific context to your requests:

• @filename - Include a specific file
• @folder - Include all files in a folder
• @codebase - Search entire indexed codebase
• @web - Include web search results
• @docs - Reference documentation

Custom Rules

Create a .cursorrules file in your project root to set project-specific AI behavior:

# .cursorrules
You are an expert in TypeScript and React.
Always use functional components with hooks.
Prefer named exports over default exports.
Use Tailwind CSS for styling.
Follow the existing code patterns in this codebase.

Model Selection

Different models excel at different tasks:

• GPT-4: Best for complex reasoning and architecture
• Claude 3.5 Sonnet: Excellent for code generation and refactoring
• Cursor-small: Fast for simple completions, saves quota

Productivity Tips

1. Start with Comments

Write a comment describing what you want, then let Cursor generate the implementation. This works better than starting from scratch.

2. Use Composer for Refactoring

Instead of manual find-and-replace, describe the refactoring in Composer: "Rename UserService to AccountService and update all imports"

3. Keep Context Focused

AI works better with focused context. Close irrelevant files and use @ mentions to include only what's needed for the current task.

4. Review Before Accepting

Always review AI-generated code. Cursor is powerful but not infallible. The diff view makes this easy - scan for logic errors, security issues, and style violations.

5. Learn the Rejection Flow

Don't accept subpar suggestions. Rejecting and retrying with more context often yields better results. Your rejections also improve future suggestions.

Frequently Asked Questions

Frequently Asked Questions

Is Cursor free to use?

Cursor offers a free tier with limited completions and slow requests. Pro tier ($20/month) includes unlimited completions, 500 fast requests/day, and access to latest models. Business tier ($40/user/month) adds team features and admin controls.

Can I import my VS Code settings?

Yes, Cursor is a VS Code fork and supports one-click import of all your settings, extensions, themes, and keybindings. The transition is seamless - you'll feel at home immediately.

Which AI models does Cursor use?

Cursor uses multiple models including GPT-4, Claude 3.5 Sonnet, and their own fine-tuned models for different tasks. You can select models in settings. Pro users get access to the latest and fastest models.

How is Cursor different from GitHub Copilot?

Cursor is a complete IDE built around AI, while Copilot is an extension for existing IDEs. Cursor's Composer mode enables multi-file edits through conversation, which Copilot can't match. However, Copilot has better JetBrains support.

Is my code sent to external servers?

By default, code is sent to AI providers for processing. Cursor offers Privacy Mode which limits data sent and ensures code isn't used for training. Business tier includes additional privacy controls and SOC 2 compliance.

Can Cursor work offline?

Cursor requires internet connection for AI features. Basic editing works offline, but completions, chat, and Composer all require connectivity to AI services.

Conclusion

Cursor represents a new paradigm in development tooling. By building AI into the IDE's core rather than bolting it on, Cursor enables workflows that weren't possible before. Composer's multi-file editing, in particular, changes how developers approach larger changes.

Start with the basics - Tab completion and Cmd+K inline edits. As you get comfortable, graduate to Composer for more ambitious multi-file changes. The investment in learning Cursor's AI-native workflows pays dividends in productivity.