If you don't know who Larry Jordan is then it's time you found out. Larry Jordan does fantastic FCP tutorials on his website. Although you have to purchase these tutorials there are plenty of excellent free tutorials on his youtube channel.
Larry's talk to the LA FCP User Group is a very interesting introduction to the world of FCPX and some of the fundamental changes to the way we'll need to edit. For me there were a couple of very important points to take home:
1. Apple's v1 releases are historically a bit rubbish, but they get better. So let's not panic or have unrealistic expectations on initial release.
2. You don't need to abandon FCP7 just because of FCPX.
3. This is a new paradigm and the hardest thing will be forgetting what we already know and relearning everything....but it looks like it will be worth it.
4. People without prior knowledge of FCP7 will probably find it easier getting to grips with FCPX
5. Apple is very good at reinventing stuff.
6. Don't worry.
So here's the full speech in 4 parts.