Esto,
Don't take this the wrong way, but there isn't much to how it works. You can't clear your odometer on it (if I remember correctly). Other than that, you can mess with it all you want to see how it works and what options it provides.
It's just like buyin a new car, you need to press all the buttons while every option is showing simply so you can prove to yourself that it doesn't have an ejection seat (then shrug in dismay that you'll have to find another way to get rid of the wife).
I don't think the factory manual tells you how to change the wheel size. Nothing is too hard on it...
-Parsko