Controls
Steering
Use left or right on the left analog stick to steer, hold foward on it to crouch and go faster. push left or right on the right analog stick to push. The bigger the rider, the harder they push. Hold down the X button to get ready to jump, release to jump.
The bar at the side of the screen is your boost bar, Press square to boost. Do tricks to give you boost.
Tricks
When in the air Press the shoulder buttons to do grab tricks, While doing a grab trick press Square to tweak it.
There are 15 combinations of grab tricks you can do, not including tweaks. Each character has different grab tricks.
To spin: when holding down X hold down the direction you want to spin, then release the X button before you reach the top of the ramp but hold down the direction, and you will spin.
To flip do the same as spinning but hold down up or down.
To grind, just land on a rail, turn sideways to balance easier by pressing left or right on the d-pad, or keep on pressing that do do rail spins.
Now to combine them all, hold down X up and left or down and left ect... release X, do a combination of grabs then land on a rail. It should look somthing like this at the bottom:
FS Misty to UNETHICAL experimental to late combo grab to rail.
A misty is a front flip and a 540 spin.