hi guys!! im a new user!! can u help me by learning how to hack??

Learn computer basics,
at best due learning a programming language.

I suggest you to learn c.
It is system-near, so you will learn how those machines work.
You have to unerstand how they work.
After that, read occasus´ signature.

Nobody is hacking here. But if you want to learn about solving challenges, you'll find a lot of things by googling. The first url I can advice is http://www.caesum.com/ with the challenger's handbook.