DVD Contents for Catching Up?

[CylonsKlingonsDaleksOhMy]

Hey you guys, I have a confession to make: I've only randomly watched two of the Nick cartoon episodes... the one with Mikey a badass in Dimension X rescuing Leatherhead, and the one with Raph brainwashed by Shredder.

You've all finally stoked my interest enough for me to want to catch up on this show even though I'm extremely skeptical of some of it (Donnie's infatuation with April, toddler Mikey and gap-tooth Donnie, teenage April and Casey). My library has a lot of DVDs, but what order do the Nick DVDs go in and what episodes do they collect?

I know to start with "Rise of the Turtles", but I can't figure out where to go next... any advice you guys can throw me off the top of your head is appreciated.

Thanks!