I've knocked out a few new video tutorials over at C4D Cafe. Topics:
How to import and apply animated textures.
Align to path and spline expressions. Plus using a rail spline.
Xpresso - 45 minute in depth video of animating all of this with a bit of Xpresso magic
The first 2 are aimed at newbies and the 3rd one is a bit more advanced.
Click the link above to warp over to our site. You'll need to register for the forums (free) before you can view the videos :)