Motion 4 -- Where or how do I get the training/information that I need to become proficient enough to make a reel or add more professional looking graphics to my editing reel? I've gone through the Lynda.com "essential training" and learned a little. I've not yet progressed to more than doing lower thirds and some simple tittle animations, I feel like I need more hands on. I'm not the sharpest tool in the shed, but I have learned how to use all the other programs in Final Cut Studio, so I hope I can eventually use Motion too.
Also just practice- I've never read a Motion book or taken a class but just learned by making projects and also reading through the manual. It's about as intuitive as they sorts of applications get once you understand how it does things.
From my experience the best way to learn is trial by fire. I've learned almost everything I know by having a demanding client sitting behind me. That client will ask you to do things you have no idea how to do. When you come through for them in the clutch there's no way you're going to forget that technique. I've done the training books and online tutorials (and they're great for helping with general knowledge and some cool techniques) but there's simply no substitute for the real thing.
Try recording some cool TV commercials. Then pick some effect or transition, etc.. that you liked and give yourself an hour or two to try and match it. Then go in and see what else you can add or change to make it more interesting/functional. I've built up quite a "library" using this method. Clients love it when they can see 5-10 pre-made concepts.