Getting First Puppy in December. Advice?

Hello all! As title states, I am getting my first puppy in December. He is a purebred Golden retriever. I have had large dogs growing up, but never had to handle the ins and outs of the puppy stage and training as I was too young. Any advice on training, teething, etc, would be greatly appreciated! Do any of you recommend the clicker for training? Also, I have a 3 yr old cat who hasn’t been around dogs that much. I understand that I need to keep them separated until they get acclimated to each others scents. Any advice on a smooth introduction as well would help a ton.

I appreciate it!