Topic: RE: attention computer gurus
A good place to start would be any A+ certification book. I don't have any specific example, but they cover all the basics. Some of it you may already know, some of it may be over your head. But it will cover a WIDE variety of topics. You may look at like a A+ for dummies (not calling you a dummy) as it may be easier to read and less technical.
As with any computer manual like that, try to get a used copy or got to half price books. New, they will be expensive. Usually around $50-$100 depending on the book.