New Fourtrax 300 owner

We used to have an old '86 Yamaha 225 atv that was stolen and finally replaced it with a very clean '96 Fourtrax 300 2x4. I'm new to small engines and this kind of machine, but more familiar with Honda and Acura cars (we're a Honda family). I've heard the Fourtrax like most Hondas are bulletproof, but was wondering what maint' you would suggest on a new purchase. We're servicing air filter, oil filter, oil filter housing o-rings, oil change, spark plug, and replacing the exhaust (rust). Not sure if we should do trans fluid or anything too. Not trying to spend a lot of money, but want to do the important things right off the bat.

And another question - new to this style of clutch-less transmission. Out of habit, I lift off the gas when I shift. Is that necessary for this transmission or can you stay on the gas when you shift? Yeah, I know I probably sound like a moron, but how do I know if I don't ask.

Didn't snap a picture, was a crazy busy weekend. Will try to upload a photo later!