Well, my first advice is to get him trained to go outside to the bathroom. This requires a lot of work on your part at this age. He needs to get right on a schedule - he wakes up & goes out, he eats and goes out 15 minutes later, he drinks water he goes out 15 minutes later, he wakes up from a nap he goes out, etc. This will make your life easier as well as his. I don't advise paper training him first b/c then you have to break him of that habit to teach him to go to the bathroom outside.
You can even hang jingle bells by whichever door you take him and touch his nose to them to ring before he goes out. After some time he will do it himself to signal you to let him out (I trained my dog to do this and it's fabulous!).
Talk to your vet about taking him for walks...he doesn't have all his shots yet so he may advise you to hold off on that until he does. Also, ask your vet about feeding him...I think it's 3 x's a day at this age - morning, noon and nite. Stay on schedule just like you would w/ a baby.
There is an awesome book that I read called "Let the dog decide" that has some great advice about raising a happy dog. Treats and lots of praise are so important - no yelling or punishments, dogs don't really get it unless they are actually caught in the act of misbehaving.
Lastly, buy lots of Nature's Miracle to clean up accidents. It's got enzymes that neutralize the pee or poo so that dog can't smell it and continue going in the same spot. also, get a crate and crate train the puppy.