Motion Graphis is After Effects and two of the masters of AE are John Dickinson and Alan Shisko and both John and Alan are the authors of two training DVDs that I found extremely useful and inspirational.
“Making it look great” Volume 1 and 2 not only show you incredibly useful techniques to create stunning motion graphics work that you can use over and over again, they also give you an insight into the creative process of professionals. On top of that, the training is priced very, very conveniently and it will pay for itself almost immediately. There is a third volume by Harry Frank that I didn’t purchase yet as I’m still going through some previous training by Harry about using expressions in After Effects. I bet this volume is as precious as the other two. If you want to learn motion graphics you will not, IMHO, find any better material. All DVDs can be downloaded for immediate gratification at the Making it Look Great website.