Anyone worth their salt is not posting tutorials to youtube or whatever because those folks are served better SELLING their knowledge. That is why it is a dry, dry wasteland out there. The only techniques on these free sites are from self-trained novices.
That being said, there are a few people out there doing decent stuff. You just have to dig. MacBreak has some cool stuff sometimes, and there's some good stuff here at the Cow, but if you are serious about taking it to the next level, you'll have to pay for your training. Look into Ripple Training, the Cow disks and local Apple Training Centers. Lynda.com has some free stuff with Larry Jordan, but the good stuff you'll have to pay. I have more suggestions, but none of them are free.
Kevin Monahan
www.fcpworld.com
Author - Motion Graphics and Effects in Final Cut Pro