Cheap computer books
If you have a public library near you, drop by there for a while. Libraries have a lot of books on computer books teaching you most things that you would like to find out about. More often than not, you do not have to buy a book for yourself. However, if you really are unable to find that specific book you are looking for, try to get cheap computer books.
As usual, the Internet is a really great place to find those cheap computer books. While some sceptics may argue that you have to pay for quality, these books are really quite good and relevant to what you may be searching for. There is always a silver lining in the clouds.