You're spending a lot of money. Are you brand new to programming or do you already have some kind of experience?
There are 2 kinds of computer books:
(1) Beginner's "introduction" type books
(2) References/manuals
(3) Crap
Once you're not a complete noob, the beginners books will be dead weight. Just borrow those from a library, instead. Reference manuals sometimes make sense to buy, but might be filled with things you could obtain online for free anyways (depending on the book).