We are getting a new pool installed tomorrow - above ground 24' X 54". Water is being delivered Thursday morning. It was originally supposed to be installed in 2 weeks, but they changed the schedule. I thought I had 2 weeks to study up, but I don't. If anyone would like to give me a list of top 5 most important things to do right off the bat, it would be greatly appreciated. The pool came with a starter kit of copious chemicals - chlorine, ph up/down, shock, a few others I can't remember - and I will admit to being a bit overwhelmed. No heater at this point, wasn't in the budget last month, we are looking to pick one up in the next week or two. I don't know what kind of pump. Basically, at this point, I know little to nothing.