You are used to navigating your computer using a point-and-click graphical user interface, or GUI:

This is a user interface paradigm that, while not invented by the original Macintosh team at Apple, was first popularized by the Mac in 1984:

TIP
If you’re curious and want to literally try out the interface of an early Mac, right from your web browser, interactively, then visit the amazing Infinite Mac site.
This lesson is focused on learning how to control your Mac using the command line:

Terminal Tutor is an well-made interactive site to teach you the basics of how to navigate the command line:

We are about to begin learning how to use the Google Gemini Command Line Interface (CLI) with Xcode to accelerate our app development process.
You will need to be comfortable with basic command line concepts to use the Google Gemini CLI.
So, please, try out the Terminal Tutor exercises and share screenshots of a few key exercises from the beginning, middle, and end of the two tutorials that Terminal Tutor offers in your portfolio on Notion. It likely will not take you as long as the estimates given to complete each tutorial.