Linux is just an operating system, shove it on an old laptop and give it a try.
Learning the specific program you're looking to troubleshoot will help a ton.
Searching "how to make a bookmark" might show you how to make a bookmark on your browser of choice, but it might also show you how to make a bookmark on a browser you're not using, or you might even get a tutorial on how to make a real bookmark.
Searching "how to adjust mouse sensitivity in Linux" won't get you very far. It would be best to search for the desktop environment you're using.
PopOS uses the gnome desktop environment. A desktop environment is in charge of most settings you'll want to modify initially. Toolbar, resolution, shortcuts, etc.
Searching for things along those lines, ending the search term with "in gnome" or "in PopOS" will direct you to better results.
The stalker series has some of the best gunplay of any low-end system game I've seen.
PopOS isn't shit
PopOS is a good introduction, but frustrating if you want to go outside their sandbox.
Manjaro is shit.