New-ish to caring for our pool - Howdy!

Hey y'all, I'm Miki, and we have a 25' above-ground pool that we inherited when we bought this place almost 7 years ago. We stumbled around and kept it in ok shape the first couple of years, then found a guy who helped us with chemical balance and cleaning for a couple of summers. He has since moved on, so it's back on us to keep it in shape. Yay. Looking forward to learning the right way to care for our pool, instead of relying on the store. Cheers!