A group on Youtube called Friendship is Card Games has uploaded three videos. The first is an explanation on how to play the new MLP CCG (or at least the beta version). The other two videos show off games in their entirety, so you can see how it works firsthand. Head on down below the break to check them all out!
And if you want print out some proxies to play with, you can find the beta sets over here in scanned form.