Tips and Tricks
You earn three stars if you complete a course in the time initially allotted, but you can keep going and still win a lower number of stars even if you don't meet that initial goal.
When jumping along the over-sized balls, aim for the middle or far side, so that you're bounced onward rather than pushed backwards.
Try to complete side objectives as you go, for additional coins and experience, which really makes every run worthwhile.
The more you play as a favorite character, the better he or she will become, so find a favorite and stick with it.