HBH- Hell Bound Hackers
It is a site for wannabe hackers and also for computer security to know about the latest news of hacker world and their exploits.
It also has a number of articles about different types of hacking and gives a good intro to all of them.
It also has many challenges which can improve your hacking skills.
And a lot more stuff I want you to check out...
http://www.hellboundhackers.org
