There is always something NEW to learn. Just when you think you have mastered your PC and the WEB, something new comes along. There is NO end to learning. DO NOT set limitations on improvement and your rehabilitation. You first have to master the basic before you can move on.
Rehabilitation is similar.
Over the years computers and the Internet have become more compact and more efficient. As a rule, the first thing you do when you buy your PC is install an anti virus program, and make a rescue disk. A car or home window enables people to see light. When you open and close windows on your desktop, you can see below the surface.