If you are using the Ground School on a tablet, each menu has an Onscreen Keyboard link. When you tap it, the virtual sizable keyboard, will appear as shown below.
Tomvale Aviation Pilot Ground School Software Software Menu Onscreen Keyboard
When you right click on a tile, you'll get a Help Widget with a more detailed explanation of what that tile does.
 It also lets you search other Help topics, while you're there. You can also access this by clicking on the Software Help tile.
As shown below, the Your Preferences tile has been right clicked and the Help Widget for that tile has appeared.

Tomvale Aviation Pilot Ground School Software Help Popup
Sometimes, when you click on a tile, you'll get an input box and be asked to provide more information. Below are examples of this:

Tomvale Aviation Pilot Ground School Software Dialogue Boxes