What is the best way to level ground to setup an above ground pool?

Whoever you buy the pool from should guide you on setting up your above ground pool. It varies with type of ground its going on, slope and level. How big is the above ground pool ? Do you need someone with a backhoe to assist you in preparing the ground you want it on? How much sand you need to give it the riight concave. Sorry, we can't view it, you can .