Don't be freaked by maintaining it yourself. A few decent tools and allow your self time it is like a big lego kit really. All the advice you could ever want is to be found on here.
My regime for my 200 Rev 3 is thus.
Pre ride
1. Check tyre pressures.
2. Check nuts and bolts.
3. Oil chain (chain lube or just gear oil dribbled on lightly works fine).
4. Mix up fresh fuel for your ride. I mix 3ltrs of Shell Vpower or Tesco 99 with 16ml oil per litre of petrol. Use any fully synthetic quality oil. Putoline strawberry stuff is as good as any and easily used.
Post ride
1. Wash & dry - I ride up the road and hop about for two mins and use the brakes to dry off.
2. If dirty clean air filter. I have three so one is always clean and oiled ready to go on.
3. Make sure fuels turned off!
4. If its been a very wet ride I now remove the plastic engine cover and leave it off till the next ride to dry any moisture out of the stator.
Every 2-3 months (depending on use. I ride weekly for 3-6 hours)
1. Change gear box oil if using ATF. Iuse Nano trans which is expensive but it lasts a long time in your gearbox wihtout "going off".
2. Check wheel bearings, brake pads etc
3. Remove throttle tube and clean bar and tube and put back together dry.
Every year (or sooner if lots of wet riding)
1. Strip and grease swingarm bushes and suspension joints.
2. Check all nooks and crannies for signs of damage like cracking welds etc.
3. Treat carb to a proper clean with an airline.
4. Bleed brakes and clutch.
This is probably more than most bikes get but I don't tend to get breakdowns either. The rest is set up tweaks that you can mess about forever doing. Its the fun of trials! One hours riding = 30 mins of tinkering over a beer.
Take it steady for the first few months and see if you can ride with some more experienced riders around to teach you the basics like lever set up and suspension.
Look at the on line trials technique vids on You Tube (Ryan Young) and this will also help.
Practice low speed tight (on full lock) turns. Riding over a telgraph pole sized log or rock and generally get the feel for how it all works. If still too much get a 200!
Enjoy!