Even the bike specific questions are pretty straight forward as long as you think about it.
Mod 1 is like you say all car park based slow speed stuff doing slaloms, figure of 8s, u turns and stopping. Easy stuff once you've practised it as you know exactly what's going to happen.
Mod 2 is basically just a nice little ride round town, with a hill start and a starting from behind a car thrown in.
Make sure you don't interfere with any other road users, get up to the speed limit nice and briskly which is easy on a bike and make sure to get your shoulder checks in.