[Selzy]

Your best bet would be to not get banned, by making stupid titles.

Back to the topic, learn how the basics of how each works, and go from there.

[SW4T]

DDoSing isn't really hacking.

But the first step is figuring out what you want to do.

Then move on to tutorials.

[xkcamd]

Honestly I'd suggest before doing anything related to hacking to learn a coding language first (if you don't know one already). Especially with web hacking, a solid knowledge of languages like php, html javascript is really needed if you actually want to understand the stuff you're learning.

[TheGrayAviator]

I suggest you to do a bit of research in the forums.
There's lots of similar questions, already answered.