My first tottering steps in Eagle, documented before I come to regard them as routine, and cease to think of them as the very high obstacles I had to overcome to get to use it to advantage.
Step 1: Instal Eagle
Evidently, that Eagle I installed on the desktop is just a pretty picture and does not help design electronic circuits any more than a pitcher of a bush looked at through binoculars (with cap on) will.
The program has to be installed so that clicking on the start button will bring up a menu somewhat like the one below. Clicking on the icon labelled EAGLE 4.13 will start the program. If you have a different version, those digits might be different, of course.
I am sorry, I do not remember any details of installing it. Selecting the default choices offered during installation should be fine, because that is what I usually do.