Heres some tips for the Mushroom cup courses.

Luigi's Raceway
:watch out for any walls
:make sure u dont go off the road.

Moo Moo Ranch
:watch out for the fences
:watch out for jumping moles

Koopa Troopa Beach
:watch out for crabs
:make sure u dont go in the water
:dont hit walls went going off ramps

Kalimari Dessert
:try to avoid the rough terrain
:try to avoide the moving train