Are you having trouble with some of the courses? Well, here's some tips and tricks for you. (There are only tricks here for Luigi Raceway. More to come, soon.)
Luigi Raceway
Watch out for tight turns. Do a POWER SLIDE to overcome them. But don't slide too much or you'll spin out of control.
You'll probably see a hot air balloon going up and down. Underneath it there is an ITEM BOX. Inside it is a SPINY SHELL. Just hop up and hit the box to get the shell.