i'm also a new, first-time owner (our girl is 16 weeks), and i wish we had:
- had our pup go potty outside right when we got home, before bringing her inside. it was nighttime and we were anxious to feed her, but i think it threw things off for her to not establish a 'potty place' outdoors right away.
- made her initial indoor area much smaller than we did. i knew we would have some rooms of the house blocked off, but the space that we gave her (kitchen + foyer + dining room) was way too hard for her to navigate for potty training. at the advice of this forum we cut this down to just the entry foyer, and she stopped having accidents almost immediately.
- similarly, taken out/not bothered with soft items or surfaces when she first came home. blankets, towels, or beds on our hardwood floors didn't function as comfort/traction for the pup - they were just really tempting areas to pee on!
- gotten clearer information about crate placement - it seems like most people's set up involves two crates. i saw advice to a) put the crate in a small, contained zone close to your outdoor access point for potty training, and b) have the crate in your bedroom so that they aren't getting too anxious lonely. this was very confusing for me! that being said, we had just one crate near the back door, and she slept there without any issues - it just meant we'd set alarms to check on her overnight vs. waiting to be woken up if she needed to go out. it would be too stressful for me to constantly listen for noise from her or worry that i would sleep through something!
- it was also very helpful to consider just how hot fluffy golden puppies can run - our girl still prefers to sleep on the cool floor vs. her dog beds. when we first got her, we'd put a damp t shirt in at night with her, and crack windows so that her area of the house was quite a bit cooler than ours. (i wonder if this is why a lot of golden pups aren't perceived as being very cuddly - they simply get too warm to be held for longer periods of time!)