Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
I moved your question about Speed boosts to this thread, where it belongs: http://www.smogon.com/forums/showthread.php?t=70306&page=139. Incidentally, when you increase Speed two stages, it doubles. So a +2 Adamant Lucario reaches 558 speed.