Sorry for the late reply but I just now noticed this thread.
Congratulations! 👍
While I don't own the house myself I live in a house owned by my in-laws, but have all the freedom to do with it as I please. So, I know the Home Depot trip. If something requires a trip to Home Depot then it will require at least three trips to Home Depot. If you remember my toilet mushroom thread that was a situation that went from just fixing a leak to plumbing, mold removal, drywalling, refinishing a bathroom w/ new vanity, and painting. Somehow my fix the one wall and leak project became remove three walls and redo the bathroom, and don't forget to fix the leak while you are in there.
The first trip was mold removal stuff and fans to dry out the area. The second trip was buying drywall, and the stuff that goes with it and the plumbing part. The third trip was more drywall stuff, paint, and another plumbing part to make the new vanity fit in the old spot. While we were plumbing we decided to go ahead and replace the kitchen faucet too, so we bought that.
House owning is a big deal and everything that comes with it is pure fun, even when it involves mushrooms growing behind your toilet. I learned a lot from my father that weekend and learned a few choice curses I didn't know existed. But, as you mentioned Home Depot meaning something to you now, I find that store is just as much fun as Best Buy.
As for bugs: Raid, or something similar works great on most things, but if you have wasps, hornets, etc I suggest a specific flying insect killer with at least a 10-20 foot spray and foaming action. The foaming action is key. I've hit slightly off-center without foaming action and found myself running inside to watch the angry wasp flying outside the door finally land and die a minute later. With foaming if you hit them at all they get grounded and/or stuck within the poison.
Be glad you have a garage, about once or twice a week I walk into a spiderweb spread between my car and the house.
Feel free to ask for advice on fixing things up. Plenty of us around here have had some experience, some of it professional. I know I've learned enough do-it-yourself skills to get by with almost anything now.
And for lawncare, I have discovered that electric works just as well as gas (except for lawn mowers), is usually cheaper, and doesn't require ear protection. Plus, your Southern CA neighbors will probably think higher of you for it (because no fossil fuels were used in making the electricity

).
Congrats and good luck. If your wife is anything like the typical wife here in Kentucky your honey-do list will be quite long, and then once you get it all finished she will decide she wants something new.
I hope all the chores won't make you too busy to enjoy football and the GTP FFL.