Welcome. Be a good chap (or chapette if you prefer) and read the Rules and Guidelines before barreling headward into the fray. Be sure to send a personal message to any admin (those jolly blokes this names as silver as fresh coinage) if you are in need of assistance. More importantly have fun and mingle.
There isn't a complete list on this site. There is a roughly complete one on Wookieepedia, but even then you only start with basic abilities, so you only need to glance at a few core powers.