I have been working on learning to play my Zendrum with only a minimal amount of drum experience (I doubt a year and a half of Rock Band counts for very much).
If you're in a similar boat as me, one thing I came across that has been helping me out a lot is the Roland DT-HD1 drum training software. It costs $80 at Sweetwater and comes packaged with a USB to MIDI connector (which by itself would probably be $40-50).
The training software comes with a lot of patterns to learn and music to go along with it. Tempo is changeable and you can apparently load your own MIDI files into it (though I haven't tried this feature yet). You have the option of playing along with drum notation or playing "Guitar Hero"-style, with visual representation of the notes dropping towards the bottom of the screen. When using the latter, the trainer will rank each hit on a 4-step scale-- "Perfect" indicates a perfect on-the-beat hit, "Good" indicates a hit that is within 1/64 note of the beat, and "OK" indicates a hit within 1/48 note. If your hits are more off than that, you'll get a "Miss".
The software also displays a visual picture of the drum kit and flashes parts of it with the patterns to show you what drums you should be hitting. It responds to standard MIDI notes so you can use it with any electronic drum kit, not just the one it's intended for, and you can change the software's latency to offset any lag that's caused by your audio interface or wireless MIDI systems.
So far it's been helping me a lot; having some form of structure is really useful when trying to learn anything new, and the fact that it'll keep score of your rhythm helps perfect your ability to control your muscles and keep time.