You will be offered a great deal of gear. Most of it is for the second month. This is the first-month list, in the order the puppy will need it.
Day one
A crate with a divider, a bed that fits inside it, a harness and a six-foot leash, two bowls, and the food the puppy is already eating. Set them up before the pickup, not after.
The first week
Enzyme cleaner and poop bags, because accidents happen indoors and walks happen outdoors. One chew toy that can be stuffed. Training treats broken small.
Skip for now
Coats, car seats, puzzle feeders, and a second bed. Buy these once you know the adult size, how the dog travels, and how fast it eats.
