I would suggest learning al you can about tcp/ip and different internet protocols. Learn all you can. The only thing that stops anyone from being a "hacker" is lack of knowledge on a subject. If something intrests you read about it, know it. Then when the time comes you'll be able to own it. Knowledge and understanding will give you the ability. Once you have that the potential is endless. What you do with it is up to you. The slang terms wont really help you, its the technical information that will. As for webpages that will help you, you already have the one you need.
If you have a question post it, someone will help you out.