Congratulations! Yorkies are great little dogs!
But I'm really concerned you are getting your puppy at 6 weeks old - that is way, way too young for a Yorkie or any other toy dog - actually it's too young for ANY dog! When puppies are removed from their mother too young, they often have separation anxiety and you could have a LOT of problems with the dog. So that's first - TRY your best to get the breeder to keep the puppy longer.
Bringing him home - please, do not drive an hour with your dog on your lap. If you had an accident or even had to stop suddenly, that dog is a projectile in the car. He could easily end up going through the windshield, or just get tossed around and badly hurt or worse. Get a small carrier cage and put a seat belt on that cage in the backseat. Put a soft towel in the cage, and your dog will be just fine.
To read more about dogs in cars, check this page online: http://www.squidoo.com/dogs-in-car.
For puppy proofing - be sure to get all small things off the ground, especially Lego's. Puppies are curious and they'll often chew and even swallow whatever is on the ground. Also check that the plants in your home are not poisonous for dogs, and that all cupboards he can reach have child proof latches.
For more on yorkie puppy proofing, you can check this page: http://www.squidoo.com/puppy-proofing-for-yorkies
Bathing your puppy? Don't be in a hurry. There's no need to bathe him more often than every other month at the most. Be sure to get a special dog shampoo, one that's good quality and organic or chemical-free such as Martha Stewart's All Natural Puppy Shampoo.
There are lots of house training tips on this page: http://www.squidoo.com/housetrain_toy_dog
Sounds like you need a LOT of info for your new dog, so I'd suggest you get a book such as YORKSHIRE TERRIERS FOR DUMMIES by Tracy Barr, available at most book stores including Amazon.com or
The Everything Yorkshire Terrier Book: A Complete Guide to Raising, Training, And Caring for Your Yorkie (Everything... by Cheryl S. Smith, also at Amazon and lots of stores.
Good luck with your new dog!