My wife and I were newbies last year. In the rookie forum (whatever), I found an old interesting thread where someone asked for the ten things you wished you'd have been told on day one. WOW! After a lot of cutting, pasting, and editing, I've got a 13 page document. Yours for the asking.
Yes, finding manuals online is valuable (imperative, actually), but there are some great You Tube tutorials to help decipher. (Especially electrical.) I poured over my furnace manual at 3 AM before I found the answer was in the thermostat manual. Your learning curve is pretty steep right now. Keep it up and keep asking us. The more you know the better you'll feel.
We haven't quit smiling with this new adventure. You're in for a treat.