First I'll answer your question.
Most questions do not require you to have points to answer. Some (protected questions) do, but many allow you to answer now. So find some questions that you know the answer to and help some people out (each upvote is worth 10 points)!
Ask good questions. If you ask questions that people think are worth their time, they'll often vote up the question (each vote worth 5 points)!
Choose the answer to the questions you ask that best works for you. This only provides 2 points.
It doesn't take all that many good questions or good answers to gain access to the important functions of the site. Go out and conquer!
However, you should note that this particular question probably should have been asked on the meta portion of the site. So expect this question to be moved and/or deleted.
In the future, ask questions about the function of Superuser on the Meta portion.