Install gh on your operating system
Pick the command for your OS and run it. This downloads and installs the official gh binary. You only need to do this once. On Mac we use Homebrew (a free package manager). On Windows we use WinGet (built into Windows 10/11). On Ubuntu/Debian Linux we add GitHub's package source first.
Mac: 'brew: command not found'
Install Homebrew first by visiting brew.sh and pasting the one-liner shown there into your terminal.
