HellBound Hackers, abbreviated HBH, is a completely legal, web-based security training ground. We offer challenges that teach you how computer based exploits work. The idea being, if you know how to exploit a website for instance, then you can go and secure your website, and help others in securing theirs. If you know how malicious hackers get in, you can keep them out.
HBH also supplies a vast library of downloads, articles, and helpful forum posts for you to learn as much as possible.
HBH is very pro self-teaching. We only act as a guide. We'll show you the bits of information you need to learn, and it's your job to go and read about it. Self teaching is by far one of the most effective ways to learn.
If you do need help and hints on what to learn, you're more than welcome to contact any member in the community and they will be happy to point you in the right direction.
Contact info can be found here.