Two options per platform. Pick the one that matches your comfort level. No coding experience required.
Go to nodejs.org/en/download and download the Windows Installer (.msi), LTS version. Run it and click Next through all screens. This installs both Node.js and npm together. Already have Node.js? Run node --version to confirm, then skip to step 2.
Press Win + X and select Windows PowerShell or Terminal. You should see PS C:\Users\YourName> at the start of each line.
Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy RemoteSigned
Type Y and press Enter when prompted. This only changes the policy for your user account. No admin rights required.
npm install -g @anthropic-ai/claude-code
Run this to approve the post-install setup step:
npm approve-scripts @anthropic-ai/claude-code
Close PowerShell, open a new window, type claude and press Enter.
Set-ExecutionPolicy command above first, type Y when prompted, then try the npm install again.
PS C:\Users\YourName> at the start of each line. No "PS"? Close the window and reopen PowerShell.
Press Cmd + Space, type Terminal, and press Enter. Or go to Applications > Utilities > Terminal. You'll see a prompt that ends in % or $.
Homebrew is the standard Mac package manager. Paste this into Terminal and press Enter:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
It will ask for your Mac password. Type it and press Enter. Nothing will appear as you type — that's normal. Follow any prompts until it finishes. Already have Homebrew? Run brew --version to confirm, then skip to step 3.
brew install node
This installs both Node.js and npm. Already have Node.js? Run node --version to confirm, then skip to step 4.
npm install -g @anthropic-ai/claude-code
Type claude and press Enter. It will walk you through signing in on your first run.
sudo npm install -g @anthropic-ai/claude-code instead and enter your Mac password when prompted.
/opt/homebrew. If it still doesn't work, follow the "Next steps" instructions Homebrew printed at the end of the install.
Eight commands. That's all you need. Once you type claude you're back in plain English. The terminal is just the on-ramp. These work the same in PowerShell (Windows) and Terminal (Mac).
cd .. to go back up one levelcd to get there, then run claude.Claude is only as good as the instructions you give it. Almost every wrong output, error, or misunderstanding can be fixed with a better prompt, not a restart.
Tell Claude what you're working with, what you want done, and what the result should look like.
Skills are add-ons that give Claude specialized knowledge for your specific workflows. They load automatically every session. Think of them as pre-built expertise for your exact job.
How to install a custom skill (provided by your team)
Go to claude.ai → Settings → Capabilities and turn on Code execution and file creation. Skills won't appear without this.
Navigate to claude.ai → Customize → Skills. You'll see active skills and a "+" button to add more.
Click "+" → Create skill → Upload a skill. Select the .zip file your team provided. It appears in your list.
Use the toggle switch next to the skill name to enable it. Claude will use it automatically whenever it's relevant.
You've been given a skill ZIP file alongside this guide. Your job is to install it, understand it, and customize it so it works for your specific role and workflow.
This skill was built to give Claude a way to help you build your own code. Your task is to make it your own. A skill that fits your role will save you hours every week.
You've installed Claude Code, learned the terminal basics, installed a skill, and written your About Me section. Save that About Me. You'll need it in Module 3. Next up: Prompting & Scripting.