I was 9 when my parents built the house with the in-ground pool, and I don't remember it being a bit complicated at all. We had an 8 foot privacy fence, which was the law in FL/our town to avoid "attractive nuisance" issues--if someone broke in and drowned, it was their own fault since we had that fence.
The pool deck connected to the tiled family room and kitchen, just had to cross a strip of carpet to get to the bathroom, and everyone was responsible for drying off before we hit that carpet. It got damp now and then, but it was Scotch Guarded, so no biggie.
Before coming in (other than quick bathroom runs), we had to shower off in the outdoor shower. That got the chlorine, etc out of the swimsuit. Then towel off real well--in the FL sun, the suit and towel were mostly dry within a couple of minutes. Hang the towel over the regular bathroom towel bar and the suit over the shower head--ready to go again later that day. I was always responsible for my own suit, so often I'd wear it into the regular shower when I was done for the day...wash it out with a little body wash, hang over the shower head, and it was dry by morning.
We only had a few kids in the neighborhood, and they could all swim, so they were allowed over pretty much whenever. My parents always provided towels, sunscreen, pool toys and snacks/drinks. We had a pass-through window between the kitchen and the pool deck, and a patio dining set, so often one person would dry off and go into the kitchen to hand stuff out.
Pool toys were kept in the garage, with a back door just off the pool deck. Everyone helped clean up before we got out. I think I was 11 or 12 when I was first allowed to swim alone (with a parent in that part of the house keeping an eye out). Swimming with no parents home--around age 13 or 14, and ONLY with the buddy system.
It all seems overwhelming now, but you'll develop a rhythm that works for you and it'll be second nature in no time.