Read up and research the breed as much as possible including all the little traits, quirks and behavioural aspects i.e. burrowing / guarding / needing care around smaller pets and being sod-pots as and when it suits but that's not exclusive to the breed they can all be that way out 
You have the advantage of bringing home a puppy which means you alone can train and shape and help turn out a well-rounded, safe and happy dog albeit very teeny-tiny one.
I personally think it's essential to have a crate / cage for safety whilst puppies are still very young and not safe to free-roam the house during the night or whilst you're out.
A good size with some blankets to make it comfy cosy at night. I've found almost all our dogs have taken themselves in there as a comfort and for a place to sleep and know they won't be disturbed or moved.
Start as you mean to go on so make any "rules" now i.e. where he can and can't go and spend these next few weeks reading up and arming yourself with knowledge.
Where there's a puppy there will always be people on hand and popping up to tell you what you should and shouldn't be doing and honestly, I'd just avoid taking too much on board because otherwise you'll go stark raving.
When he comes home and whilst he's still grounded and his vaccinations have kicked in, have lots of fun and play lots of games and introduce him to lots of new sights, sounds, smells and enjoy! 