Special thanks to AKC for this great information.

Introduce "pre-training activities" - Although your puppy has a very short attention span, you can begin gently developing a few basic behaviors such as wearing a collar, following on a leash, and coming when called.  Keep each session only about 3 minutes long, with the emphasis on FUN, using plenty of treats and praise.

Since his immunity isn't established, your pup can't yet venture to training classes or public places.  But it is important for him to start meeting a variety of people. ...

Your pup's immune system is not fully developed until he's about 12 weeks old.  To help protect him from several serious canine diseases, it's crucial during this time to keep up with his vaccine schedule (his "puppy shots") as recommended by your veterinarian.  It's also very important to keep him away from other dogs, and from areas where other dogs may have soiled the ground, until he's 12 weeks old. 

Resist giving your pup "people food," but be sure to feed him four times a day with a...

As your puppy shifts his dependence to you as his owner and leader, you'll become the center of his world.  He'll probably like to lie down on top of or beside your feet!

He is curious about everything around him.  He has a very short attention span at this age, and is easily distracted.

Although he had little sense of fear in earlier weeks, at some point between 7 and 9 weeks he may be suddenly cautious of anything new in his environment.  This "fear period" is normal.  He may be fearful o...