Question about the Sicilian Defense

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TooManyBlunders wrote:

The Sicilian Defense is a good opening, but you have to know how to play it properly (there is a lot of theory) or else you will lose very quickly.

Yeah, I recently played against a 2400 player and he played the Sicilian. He did not know how to play it that well as black, for I quickly initiated an attack. I almost won, but unfortunately, his technical skill allowed him to get out the inferior position and I made a couple of mistakes. Later on, I achieved a drawing position, but of course I messed that up too.