If it's going to sit for the whole winter, you could drain the gas out of the tank and the carb float bowl, and just go out a few times a month and use the kickstarter to turn the engine over to keep oil on the critical inner surfaces during long storage.
In a heated garage, there's not alot else you'd really have to do.
If you want to ride it on a nice day during the winter, then you could just have a gas can there to put gas in it for your ride. Then, when the weather socks you in for the duration, you can drain the gas again, and go back to the previous procedure until spring.
It's a good time to go out in the garage and polish the bike and all the alloy parts, so that when spring comes around, it's gleaming like new.