What To Use?!?

Ok, I have no idea what suspetion to use.. Bags, cans, struts, anything else? I want somthing ran with air. What would be the best suspention setup to go with, and what all is required to make them function, like valves or what? Im pretty new to all of this, so please, bare with me. Oh yah! The suspention is going on a golf cart, so its doesnt have much weight to Deinflate stuff with. Thanks in advance.