What ever you do, DONT exercise it too much as a puppy! This can contribute to unecessary wear on their hips, as they arent fully developed, and also can lead to a heart issue.
From day one you have to let him know who is boss! You can still pour tonnes of affection on him, but you must also lay down the rules!
As for help preventing the hip issues, Cod Liver oil in his food every day from the age of 1. But no more than a teaspoon, as you will quickly find it soon starts sending food out the other end rather rapidly!
If you have the time, puppy classes are FANTASTIC! As not only does it help you make a start on basic training for your dog, but it also gives the puppy a chance to interact with other puppies!
This is one of the BEST doggie books i have ever read:
http://www.amazon.co.uk/Its-Me-Dog-H...5075928&sr=1-1
Its just full of common sense!
Ultimately, your dog will be your best friend, and give you complete unconditional love! So make sure you love it back!