Go to your local skate shop. Buy a blank deck for $30 and get some grip tape. Next go into the bin at the back that has all the scratched trucks and get 2 trucks, preferably of the same variety, then get some big blank wheels, some bearings and hard wear and slap that shit together. Now you've got yourself a board to cruise on that actually functions and you won't look like a fucking tool riding to class on your brand new $200 longboard that you probably don't know how to ride.