What are some good resources for learning Motion 4?
I found rippletraining to be very helpful. Larry Jordan is also a good starting point.

Alex4D puts out some really cool, easy to learn from, Motion templates. Sight-Creations is another great resource to find Motion templates. 

You're also going to find lots of good starting material on YouTube. 


TimesaverTutorials
DoApproductionss
Dan Allen


If you didn't know, you can also save YouTube search queries and subscribe to them in Google Reader. I find a lot of good stuff there too. 

Lastly, I want to mention Vimeo. The quality of videos you're going to find there is really astonishing. Check out the group Motion tips &amp; tricks

Cheers,
Andreas