For Jake · From Mark · Aug 2026

Claude Code, From Zero

You already use the Claude app. Claude Code is the same Claude, but it lives on your computer, where it can make real things: business cards, flyers, client lists, quotes, even web pages like this one. This page gets you from nothing to working in about 20 minutes.

What it is

The app answers questions in a chat. Claude Code does work on your computer. You type what you want in plain English, and it creates the files: a card design, a price sheet, a one page website. You never write code. It writes the code. You just describe what you want and look at what comes out.

The terminal, in one minute

Claude Code runs inside a program called a terminal. A terminal is just a text window: you type a line, press Enter, and the computer runs it. No mouse, no buttons. It looks intimidating and it is not. You only ever need to do two things in it: open it, and type claude. After that you are talking to Claude in plain English, same as the app.

Setup · Do these in order
  1. Get Claude Pro

    Claude Code is included with Claude Pro, $20 a month. The free plan does not include it. Upgrade in the app or at claude.ai with the same account you already use.

  2. Open PowerShell

    Press the Windows key, type powershell, press Enter. A blue or black text window opens. That is your terminal. Pin it to your taskbar; you will use it every day.

  3. Install Claude Code

    Copy the line below, right click inside the PowerShell window to paste it, press Enter, and wait for it to finish.

    irm https://claude.ai/install.ps1 | iex

  4. Start it and log in

    Close PowerShell, open it again (same as step 2), type claude and press Enter. Your browser opens and asks you to sign in. Sign in with your Claude account, the same one as the app. You only do this once.

  5. Talk to it

    That is the whole setup. Now just type what you want. It will ask permission before it changes anything, so say yes when it asks. When you are done, close the window. Next time: open PowerShell, type claude.

Say these first · copy them word for word
Make me a folder on my Desktop called Business. From now on, save everything you make for me in there.
Design me a business card. I do [your trade]. My name is Jake Siedman, my number is [number]. Make it a printable file and give me three versions to pick from.
Make me a one page flyer I can hand out, with tear off tabs at the bottom that have my number on them.
Make me a price quote template I can reuse. It should look professional and have my name and number at the top.
Write me a list of 30 property managers in [your town] I could pitch, with a short text message I could send each one.
API keys and your own domain

An API key is a password that lets Claude act on your account at some other service, so it can do things for you there instead of just telling you how. You paste the key in once, then ask in plain English.

The one worth setting up first is Cloudflare, because it gets you a real website. A domain is a name on the internet, like sideman.com. Own one and Claude Code can put pages on it in one sentence, the same way I made this page and put it at this address.

How: make a free account at cloudflare.com and buy a domain there, about $10 a year. Then tell Claude Code: "I bought a domain at Cloudflare. Walk me through making an API token, step by step, then save it so you can put pages on my site whenever I ask." It will walk you through every click. From then on, "make me a page about my services and put it at cards.yourname.com" just works.

This is the real unlock. You can hand a customer a link with a clean writeup, a price sheet, or a photo gallery of your work. People who cannot make these things themselves assume whoever sent it runs a serious operation.

The plan · getting out of the labor market
  1. Week one: get comfortable

    Do the setup, then use it a little every day. Ask it anything, including questions about itself: "what can you do for someone like me?" It knows.

  2. Week two: build your kit

    Business cards, flyer, quote template, and a one page website that says who you are, what you do, and your number. Print the cards at Staples or vistaprint.com from the file Claude makes.

  3. Week three and on: client acquisition

    This is where it pays. Have Claude build lists of likely customers near you, draft the outreach texts and emails, and keep a simple file tracking who you contacted and who answered. Ten minutes a day of sending beats any ad you could buy.

You cannot break anything by asking. Claude Code asks permission before it changes files, and nothing you type into it can hurt your computer. The only real rule: never paste in commands from strangers on the internet, only from Claude itself or from me.
Stuck? Screenshot it and text me. Or just paste the error into Claude and say "what went wrong?" It fixes its own mistakes better than anyone.