I plan on purchasing an Intex metal frame pool today, what else do I need to buy to maintain my pool?

It's a 10' x 30" pool above ground metal frame pool. I know I am going to need chlorine, shock, pH testers and algaecide, but what kind? Also, how much and how often do I need to add these items to the pool since it is small? It says it holds a little over 1,100 gallons.