Sonic Riders Q&A

i have tried 2 grind and i have succeded a couple times but idk what i did. i also lost the little book thing that came with it. So idk what 2 do and i really need 2 know how 2 grind for the sand level on the bablyon story mode.

in the babylon guardian level how do you get to level 2 and 3?

how do u unlock them please help me and how do u unlock super sonic please help me