I've been getting involved in a lot of programming projects, as well as experimenting with different programs on the computer recently, and as such am having to give myself a crash course in a lot of applications that I have not had much eperience in before. As you can imagine I soon hit a few walls when getting certain code or applications to work. I did a search for some help, and came across this gem, that offers security books for free online! Techbooksforfree.com deals with all manner of books for a variety of applications or programming languages. I've given this a try and found it to be extremely helpful. Worth a look if your stuck!