glad you clicked !

The thing is, on the pages ahead, you'll see two kinds of hypertext. One will be the standard, clickable kind that will bring up another screen, or another example. These links will appear in the menus, and the hypertext will be blue.

But there will also be green hypertext. When you move your cursor over these green, hyper-texted words, don't click. Instead, look at the Status Bar at the bottom of your screen to see a short identification of the syntax of the hypertexted words.

If you don't have a status bar, go to View and click on Status Bar, and you'll see one appear. It's a nondescript grey bar that runs along the bottom of your screen.
If you don't understand this yet, you will on subsequent screens. No big deal.