Jumping/Crouching is a Trigger, right now it's a binary function but hopefully gets pressure sensitivity in the future
Grinds are done with both analog sticks in unison, grabs are largely broken right now. Body flips are done with right stick, although flatspin is the only one implemented
You move forward with A, similarly to pushing in skate. Tap for a small stride, hold for full strides.
Spins can be done with left stick or LB/RB, so that you can spin one way while jumping another or setting up a certain grind