Get the book Easy Peasy Puppy Squeezy and also join the FB group “Dog training advice and support” - they have loads of guides once you join which are fabulous. Their toilet training one amazing and if you follow it, you’ll crack it within a few weeks.
Everyone thinks their puppy bites excessively and starts worrying it might be aggressive or too much. It’s not - they really do bite that much. It’s worse when they’re tired so enforce naps, but it’s a phase you have to get through. There comes a point when you just realise they haven’t done it for ages (although that point may not come for about nine months). Wellies in the house and keep small children away from them (puppies and under-5s are not a good mix!)
Don’t listen to anyone who tells you to put the puppy on its own in the crate in the kitchen on the first night and let it cry it out. It’s a baby, it’s left its mum, siblings, home, familiar smells and everyone it knows. It’s really scared and it needs reassurance. Put it in its crate in your bedroom at first (we had two, one upstairs and one downstairs). That also means when it wakes to toilet, you’ll wake up too and can scoop it up and get out to the garden at 3am for a wee (get used to being in the garden in your PJs for a few weeks).
Socialisation between 8-16 weeks is crucial as this is the time when the puppy’s brain is learning from its experiences. If it can’t go out due to not having had its vaccinations, that just means it can’t go on the floor where lots of potentially unvaccinated dogs have been. You can take it to the house or garden of well-mannered vaccinated dogs to meet them, and it’s crucial you show it lots of smells and sights - get a puppy sling and carry puppy to lots of new places. Go sit on a bench at the train station, outside the supermarket, the playground….anywhere you basically want your puppy to be fine and relaxed about in future. Feed tasty treats while they’re there to start building positive associations with new places.
Puppy blues are real. It’s exhausting and such hard work and you will have moments of regret and feeling like you’ve made a huge mistake. Hang in there - it honestly does get easier. And you’ll have the best boy/girl ever, we all own the best dog in the world 😊