Hi and welcome to the forum!
Since FCE has a rather steep learning curve, I'd recommend that you purchase at least one of two training books to help you on your way:
1. [Final Cut Express 4 Editing Workshop|http://www.amazon.com/Final-Cut-Express-Editing-Workshop/dp/0240810775 /ref=sr
12?ie=UTF8&s=books&qid=1240436986&sr=8-2] by Tom Wolsky. This is how I learned the program and I can assure you that it is a comprehensive guide with everything from basic to more advanced techniques. I highly recommend it. Tom is a frequent contributor to this forum, so if you had any questions about a lesson then he'd be here to help you out.
2. [Apple Pro Training Series: Final Cut Express 4|http://www.amazon.com/Apple-Pro-Training-Final-Express/dp/0321534670/ref=sr
14?ie=UTF8&s=books&qid=1240437118&sr=8-4] by Diana Weynand. Though I can't vouch for it personally, I have heard from many people who were pleased with their experience learning from this book, and I'm sure it is quite good also.
You might also check out these free online tutorials:
http://www.izzyvideo.com/learn-final-cut-express/
http://www.apple.com/finalcutexpress/tutorials/
http://www.rippletraining.com/freetutorials_oldies_butgoodies.html?cms=88e1757dd929cacb053b6d1670b3f45e
Of course, there's always the FCE User Manual that you can access from the program's Help menu. That's over 1000 pages though so the sources mentioned above are a good place to start!