Desktop Step 1: Install Google Antigravity, the Free AI Development Environment, and Set It Up Right

Table of Contents

1. Why Antigravity?
2. Step 1: Download and install (10 minutes)
3. Step 2: Meet the two screens; you spend 90% of your time in one (5 minutes)
4. Step 3: Hand over your first task (10 minutes)
5. Step 4: Check and revise, the boss's daily routine (5 minutes)
6. Three things to know first so you avoid wasted detours
7. Today's homework

If you have a computer (Windows or Mac both work), this "desktop track" is for you.

Everything the phone track teaches works on a computer too, but a computer can do one thing a phone cannot: let AI work directly on your computer, writing files, running programs, opening a browser to show you the result. You move up from "chatting with AI" to "putting AI to work."

Step one is setting up your workspace. We will use Google Antigravity.

#Why Antigravity?

There are plenty of AI development tools out there (Cursor, Claude Code, Windsurf...). The reasons we recommend beginners start with Antigravity are practical:

1. When this post was written (July 2026), it was completely free. No credit card needed, and the AI models inside (both Gemini and Claude are there) are ready to use. This is a land-grab bonus; nobody knows how long it will last, but getting in now costs nothing.
2. It is made by Google, and the install is the most painless. Download, sign in with your Google account, start using it: three steps. No pile of confusing settings to configure.
3. It is an "agent"-style tool. You say what you want in plain language, and it writes its own plan, does the work itself, and shows you the result when it is done. Your role is the boss, not the engineer.

An honest heads-up: tools like this update very fast (it had a major overhaul just this May), so what you see on screen may not look exactly like any tutorial. That is fine. This post teaches you the process, not button positions. The process does not change: assign the task → review the plan → approve → check the result.

There is also one rule that holds for the whole series, so here it is up front: the tools you will use from here on (Antigravity, Vercel, GitHub) all have English interfaces. That is normal and does not mean you installed the wrong thing. There is only one way to handle it: for any screen you do not understand, copy the whole block or take a screenshot, paste it to the AI and ask "What does this mean, and which one should I click?". Whatever language you type in, the AI answers in that language. You will use this move in every post that follows.

#Step 1: Download and install (10 minutes)

1. Open your browser, type antigravity.google straight into the address bar (yes, it does not end in .com; this is the official address), and click download. If you find it through search, confirm it is this address before you click: the top search results are often ads.
2. Choose your system (Windows / Mac), download the installer, and click Next all the way through.
   • Windows shows a blue "Windows protected your PC" screen? Click "More info", then "Run anyway". Mac says the developer cannot be verified? Go to "System Settings → Privacy & Security" and click "Open Anyway". This is the system's routine warning for any newly downloaded software; as long as you downloaded it from the official site, you are fine.
3. The first time you open it, it asks you to sign in with a Google account. Your usual one is fine (if you do not have one yet, go to google.com, click "Sign in → Create account" in the top-right corner and make one; it is free). Signing in jumps to your browser and, once you are done, jumps back to the app automatically. This back-and-forth bouncing is normal.
4. During setup it may ask about some preferences (interface color, whether to import settings from other tools). Pick the defaults for all of them; you can change them anytime later.
5. Once you are in, it will ask you, in English, whether you want to choose a folder (labelled folder or workspace) as your workspace. Right-click an empty spot on your desktop, choose "New → Folder", give it a name (for example my-ai), then come back and select it. Everything you make from now on will live there.

How to tell it installed correctly: there is a new Antigravity icon in your Start menu or on your desktop, and opening it shows a screen that looks like a chat room.

The install gives you more than one tool; it is a whole kit: the main app (which this post uses), plus a command-line tool for advanced users. Ignore the latter for now. When you want to move up to the terminal level, the Claude Code hands-on tutorial covers the same kind of tool.

#Step 2: Meet the two screens; you spend 90% of your time in one (5 minutes)

Open Antigravity and you will see two kinds of screen:

• The editor: packed with code. Cannot make sense of it? Completely normal, and you do not need to.
• The agent management panel (labelled Agent Manager on screen): a place that looks like a chat room, where you talk to the AI and watch its progress. If you cannot find it, look for the text input box at the very bottom of the screen: that is it.

You spend 90% of your time in the management panel. Treat it as the conversation window between you and your employee: you assign work, it reports progress. The editor is the employee's desk; you only need to wander over and glance at it now and then.

#Step 3: Hand over your first task (10 minutes)

In the input box at the bottom of the management panel, type this straight in (the interface is in English, but whatever language you type in, it replies in that language):

Build me a countdown web page: I enter a date and an event name, and it shows "N days until [event]". Keep the design minimal and dark, with large text, and make it look good on a phone too. When you are done, open it in the browser for me.

Once you send it, watch for the three things it does:

1. It lists a plan first (which files to create, how many steps). Spend 30 seconds reading it. You are not checking the technical details; you are checking whether it understood what you want.
2. It starts working, executing step by step, with the whole process laid out in front of you. Partway through it may ask you "Run this command?". If you do not understand, just reply: "What does this command do? Explain it in plain language." It will explain, and then you decide.
3. When it is done, it opens the result for you. A real, working web page, right there in your browser.

From finishing that message to seeing the finished page usually takes a few minutes at most.

#Step 4: Check and revise, the boss's daily routine (5 minutes)

Looking at the result, you will certainly want to change something. Just say it, the way you would talk to a designer:

• "Make the title a bit bigger and change the color to something warmer"
• "Add a feature: show three countdown events at once"
• "I want a very faint starry-sky feel in the background"

Every time you say something, it makes a new version. This "look → say → revise" loop is your daily routine for everything you build from here on.

What if something goes wrong? Red text appears on screen, or the web page breaks: copy the entire error message and paste it back into the chat box, without changing a single word. Fixing errors is its job, not yours.

#Three things to know first so you avoid wasted detours

One: free means "for now." Tools like this all end up charging; right now is the bonus period. So do not hesitate: build your skills while it is free. By the time it starts charging, you will already know whether it is worth the money to you.

Two: do not agonize over the model. Inside you can choose between different AI models such as Gemini and Claude; beginners should just use the default. Once you get the feeling "it is not doing this task well enough," try switching models and comparing. By then you will understand the differences naturally.

Three: it asks you before it acts, and that is protection, not a hassle. When the AI wants to run a command on your computer, it asks for permission first. You can always ask "What will this do?" before letting it through. This habit is what this series keeps saying: AI does the work, the judgment stays with you.

#Today's homework

1. Install Antigravity and sign in
2. Use the message from Step 3 (or change it to something you want to make) to build your first web page
3. Go back and forth for at least three rounds of revisions to get a feel for the "boss loop"

Once you finish this post, your computer is already an AI studio. The next post skips the toys and has it build something you will actually put to use: Desktop Step 2: a one-page service introduction, live as soon as it is done.

If you want to go straight up to the terminal and give the AI a wider range of action, you can also skip ahead to Step 3: Claude Code Hands-On Tutorial (2026).

FAQ

Does Google Antigravity cost money? Do I need a credit card?

When this post was written (July 2026), it was completely free at this stage: no credit card needed, and the AI models inside (both Gemini and Claude are there) are ready to use. This is a land-grab bonus and nobody knows how long it will last; tools like this all end up charging, so build your skills while it is free.

How do I download and install Google Antigravity?

Type antigravity.google straight into your browser's address bar (it does not end in .com), click download, choose your system (Windows or Mac), download the installer and click Next all the way through. The first time you open it, sign in with your Google account, pick the defaults for the preferences, then choose a folder as your workspace. If you find it through search, confirm it is this address before you click: the top search results are often ads.

Windows or Mac shows a security warning when I install Antigravity. What should I do?

On Windows, click "More info", then "Run anyway". On Mac, go to "System Settings → Privacy & Security" and click "Open Anyway". This is the system's routine warning for any newly downloaded software; as long as you downloaded it from the official site, you are fine.

Antigravity's interface is in English. Can I use it if I cannot code?

Yes. Type in the input box at the bottom of the agent management panel (labelled Agent Manager on screen) in whatever language you like, and it replies in that language. For any screen you do not understand, copy the whole block or take a screenshot, paste it to the AI and ask "What does this mean, and which one should I click?". Not understanding the code in the editor is completely normal; you spend 90% of your time in the management panel.

What should I do when the page Antigravity built has an error?

Copy the entire error message and paste it back into the chat box, without changing a single word; fixing errors is its job. When it wants to run a command on your computer, it asks for permission first, and if you do not understand you can ask "What does this command do? Explain it in plain language." before deciding whether to let it through.