This site has a large program that contains a small CISSP quiz set and some really cool entry/intermediate-level video tutorials on using some populat and not-as-popular scanning and penetration tools. The videos are free, some tools are linked off the site. The videos use a “tscc” TechSmith Camtasia codec, so that might need to be downloaded.

A beginner’s article on explaining and performing some SQL Injections on web apps.

TechBooksForFree has a small list of free e-books online.