
Welcome to the forum - you'll find a wealth of information here and hopefully sufficient answers to the early stages of puppyhood which can easily be perceived as problems but are of course normal puppy behaviours whether a tiny Yorkie or a Giant breed such as a Wolfhound :)
House training needs to be kept on top of from day one, constant vigilance for any signs of sniffing or circling and get the little one outdoors IMMEDIATELY! Also, after all meals, naps and play sessions pups need to relieve themselves as they only have tiny bladders and bowels plus no control over these for many weeks yet. Use a key command word such as busy immediately on performing the toilet so making an association with where and when approrpriate to do so.
Most pups dont pee on their own bed but it's not written in stone as some will. Often the reason is they 'leak' when asleep or their bed is in a confined place such as a crate and no room to move away from it.
Re growling when being picked up - most dogs really don't like to be picked up, unfortunately few owners appreciate this and the growl ( a fear response) is punished making the puppy even more frightened.
Read this excellent
article on teaching bite inhibition - IMO its a must have for everyone with a new puppy and ideally several copies should be printed off and left in obvious places throughout the house so all family members consistently follow the same rules :)
I no longer ever recommend on sole author as I've yet to find one with which their methods suit me from cover to cover re training. Far too much emphasis is put on dogs being dominant or needing to be shown who is boss. Dogs are a different species from us, they know that, they see us as guardians and providers of their most essential resources food, water, shelter and comfort. They have no intentions of taking over the world. A dog may be dominant with another dog - to any other animal species he is either prey or predator whereas to humans he is COMPANION. :)
Keep that in mind and IME you will not go far wrong,
best wishes, Teri