How to Use Cursor AI: A Complete Beginner's Guide (2026)

Cursor just hit a $30 billion valuation. If you haven't tried it yet, you're missing the most productive coding environment available in 2026. Here's exactly how to get started.

What Is Cursor AI?

Cursor is a code editor built on top of VS Code — so it looks and feels exactly like VS Code — but with AI deeply integrated at every level. Not just autocomplete. AI that can read your entire codebase, understand what you're trying to build, write multi-file changes, and debug problems end-to-end.

If you already use VS Code, your extensions, keybindings, and settings migrate in one click.

Step 1: Install Cursor

1. Go to cursor.sh and download the installer for your OS
2. Run the installer — it takes about 2 minutes
3. On first launch, Cursor will ask if you want to import your VS Code settings. Click Yes if you use VS Code
4. Sign in with your email or GitHub account

Cursor has a free tier with limited AI uses per month. The Pro plan ($20/month) gives unlimited completions and access to the most powerful models (Claude and GPT-4o).

Step 2: Understand the Three Core Features

1. Tab Completion (Copilot++)

As you type, Cursor predicts and suggests your next lines of code. Press Tab to accept. This is faster and more context-aware than GitHub Copilot because Cursor reads your whole codebase, not just the current file.

Pro tip: Don't just use it for obvious completions. Cursor often predicts entire functions, variable names that match your conventions, and even fixes bugs you didn't notice yet.

2. Chat (Cmd/Ctrl + L)

Opens a chat panel where you can ask questions about your code or request changes. The AI has full context of your codebase.

Example prompts:

• "Explain what this function does"
• "Why is this returning undefined?"
• "Add input validation to this form"
• "What's the difference between these two implementations?"

Use @file to reference a specific file: @UserService.ts Why is the login method returning 401?

3. Composer (Cmd/Ctrl + I)

This is the power feature. Composer can make changes across multiple files at once. Describe what you want to build and Cursor figures out which files to edit, creates new files if needed, and shows you a diff before applying anything.

Example: "Add a dark mode toggle. Store the preference in localStorage. Apply the theme to the whole app."

Cursor will identify your theme files, your layout component, and your settings — and make all the changes together.

Step 3: Your First Real Task

Let's try something concrete. Open any project and try this:

With Chat:

1. Press Cmd+L (Mac) or Ctrl+L (Windows/Linux)
2. Type: "What does this codebase do? Give me a 3-sentence summary."
3. Cursor reads your files and explains the project

With Composer:

1. Press Cmd+I
2. Type: "Add a loading spinner to the main button component. Use the existing CSS variables."
3. Review the proposed changes in the diff view
4. Press Accept to apply them

Step 4: Key Shortcuts to Learn

Shortcut	Action
Cmd/Ctrl + L	Open Chat
Cmd/Ctrl + I	Open Composer
Cmd/Ctrl + K	Inline edit (edit highlighted code)
Tab	Accept autocomplete suggestion
Esc	Reject suggestion
@filename	Reference a file in Chat
@codebase	Search entire codebase

Step 5: Rules for AI (Make It Match Your Style)

One of Cursor's best features is .cursorrules — a file you put in your project root that tells the AI how to write code for your project.

Example .cursorrules file:

You are working on a Next.js 16 app with TypeScript.
- Always use functional components
- Use Tailwind for styling, never inline styles
- Use async/await, never .then()
- Write JSDoc comments for all exported functions
- Prefer named exports over default exports

Once this file exists, every suggestion and Composer output follows your conventions automatically.

Common Beginner Mistakes

Accepting suggestions without reading them. Cursor is fast but not perfect. Always skim what you're accepting, especially for Composer changes across multiple files.

Not using @codebase for questions. When you ask "how does authentication work in this app?", add @codebase to make sure Cursor searches all files, not just the open one.

Ignoring the diff view. Composer shows you exactly what it's changing before applying. Use this. It's easy to accept a change that looks right but breaks something elsewhere.

Not customising .cursorrules. Generic AI output is fine. Output tailored to your exact coding conventions is much better. Spend 10 minutes writing your rules file — it pays back immediately.

Cursor vs GitHub Copilot

The main differences in practice:

• Cursor reads your whole codebase. Copilot mainly works on the current file.
• Composer is unique to Cursor. Copilot has no equivalent multi-file editing feature.
• Cursor supports multiple AI models. You can switch between Claude, GPT-4o, and others depending on the task.
• Price. Both are $20/month for Pro. Cursor gives more for the same price.

If you're already on Copilot, it's worth trying Cursor for a week. Most developers who switch don't go back.

Start Learning

FreeAcademy's free Cursor & AI IDE Workflows course goes deeper — covering advanced Composer techniques, codebase indexing, debugging with AI, and building production features from scratch using only AI prompts. Free, interactive, certificate included.