Windows uses a GUI (Graphical User Interface) so almost everything can be done using mouse clicks on icons and buttons. You don't have to memorize commands or remember keystroke combinations. Instead of typing commands, you can SEE what you are doing. Later, once you know your way around, you will find it useful and often faster to type in commands or use those odd combinations of keystrokes.
Windows now comes in many different versions and often several flavors for a particular version. Confusing? Probably! Your workplace, friends, and school may all be using a different version. So it is worth a bit of trouble to get familiar with what you might see out there, as well as what you see on the computers you usually use.
These lessons are going to show you many of the "looks" that you might run into. Many of the tools and features underneath are the similar in all the versions. It's just getting to them that changes.