I've always just done the little tub of Turtle Wax paste you can get wherever. I did a full buff and polish a few years ago which you can only do while you still have clear coat because a polish removes material. Wax just rub in by hand with the applicator, I used to use the foam pad on the buffer but it makes a mess and I was lazy to hand applicator works. 

I think this is what it looks like now. Mine tub is pretty old. 
https://www.turtlewax.com/products/super-hard-shell-paste-wax-14fl-oz 

 Thanks!