Computer maintenance is confusing for most users.  But one thing for sure, the more you are on the internet the slower the darn thing seems to get.  Or the advertising junk that is constantly slowing your system down there is a simple cleanup that can really help.  In Windows it is simple.  At the run prompt, type “cleanmgr” and hit run.  You will get a list of what Windows itself knows it can clean off.  Now here is a big secret...