Choose skill level first. You have 120 seconds to collect the 4 orange skate wheels. Do different tricks to get cash.
To collect cash you must perform the required trick.
To collect red cash - perform a jump
To collect blue cash - perform a handplan
To collect the yellow cash - perform slide.
To collect the green cash - perform a spin.

Manual:
Use arrow keys to move skater.
N - spin skater
M - hand plant
Spacebar - jump
Spacebar then M - air trick
rail/block slide :approach either end of the rail or parking block and press the M key before hitting it.