Don't expect him to do much of anything except eat, sleep, chew and poop at 6 weeks old.
You shouldn't take him outside in public till he has all of his puppy shots, which end at 3-4 months old. You run the risk of him contracting serious diseases before he is fully vaccinated. Him being 6 weeks... you probably picked him up a day or two ago, and he probably got his shots the day you picked him up or the day before... so he has had NO time to build up immunity.
Keep him in your house and back yard, away from other dogs and public places untill he is fully vaccinated. This means, no Petsmart, Petco, dog parks, or walking on leashes around the block.