Okay, I'm registered for Macworld and signed up for the Users Conference. Lots of interesting topics to choose from. I've already got my eye on the ones I want. These sessions are about an hour and a half. Now I'm having second thoughts. Are these just "teasers" from which I won't get any real knowledge or are they really comprehensive seminars? Would I have been better off signing up for one of the Power Tools conferences? This is my first Macworld so I appreciate any advice from you veterans.