This guide covers Claude Chat, which is the web-based version of Claude and the closest thing to ChatGPT. That's where we're starting. Cowork is the desktop app version with more advanced capabilities, and we'll point to it when it's relevant, but you don't need it to complete this guide.
Total time: about 45 minutes if you don't get distracted.
Check each box as you go, your progress saves automatically
You finally decided to make the move. Congrats. No more watching everyone else post "I switched to Claude and never looked back" while you quietly stayed on Chat.
One thing before we start. If part of you is thinking "but ChatGPT knows me so well," good news: everything it learned about you comes with you. The way your brain works, your brand stories, your offers, your ideal client, how you like your AI to work with you...you name it! (You'll be shocked to find out what GPT actually knows about you). We'll bring it over in about 10 minutes, and Claude will end up knowing you better than Chat ever did.
Let's set it up!
This part is simple. We're covering: creating your account, free vs Pro, how the interface works, and understanding the Claude product family.
You've already trained ChatGPT whether you realize it or not. You've spent months teaching it what your business is, how you think, how you communicate, what annoys you, what kind of output you hate, and what your audience sounds like.
Do not leave all of that behind. This takes maybe 5 minutes and makes a massive difference.
Custom instructions are the setup step almost everyone skips. They're also why most people still think AI content sounds robotic. The tool never gets enough context before being asked to write.
Custom instructions are the difference between:
"write me an Instagram caption"
and
"write me an Instagram caption while already understanding my business, my audience, my tone, what I'd never say, and how I naturally communicate."
Huge difference.
One more thing about custom instructions: they are a note you leave Claude before every chat. One box, with a character limit, that loads the same way for every conversation. It is real context, and it makes a real difference compared to starting cold every time. What it can't do is hold the kind of detail that a full brand voice guide and a full anti-AI writing guide can. Those live inside Cowork in dedicated files Claude reads before every task. The Claude Brand Voice Kit walks you through building those files.
Projects are basically folders inside Claude. But the important part is this: projects hold context. Meaning the files, instructions, and conversations inside one project stay connected. So instead of starting from zero every single time, Claude already has background information loaded.
This is where the rewriting loop usually starts disappearing.
In under an hour, you:
And now that the setup's handled, you can build content systems, sales pages, lead magnets, launch assets, email workflows, and customer research files without re-explaining yourself every single day.
Now that the setup is done, here's the simplest prompt to use for your first real task. Copy it, fill in the brackets, and run it.
I want to [task] so that [success criteria]. Read my files. Ask me questions before you start.
Three pieces to:
Example filled in:
I want to write 5 Instagram captions for next week about my account review offer so that they sound like me and drive at least 3 DMs to my booking link. Read my files. Ask me questions before you start.
Next step
This guide got you set up on Claude.ai. The next step is making Cowork actually sound like your brand on first draft, every single time.
Inside The Claude Brand Voice Kit, you build the 4 brand files Claude reads before every task: who you are, what your business is, your brand voice, and your anti-AI rules. About 2 hours total. Set it up once, never explain who you are to Claude again.
Grab The Claude Brand Voice Kit