We've had Cruiser a week tomorrow. He's eating good now and playing a lot. He's much better. He's doing good with the potty training for the most part. He sleeps good at night. Now on to things we haven't started:
How often should I give him a bath? He had one last Thursday at the breeder's. I have brushed in almost everyday but I have given him a bath.
It depends on the dog...some smell more than others or get oily coats. Mine usually get a bath every 2 weeks unless they are naughty and get into something.
How often do his ears need to be cleaned?
I do this when they get their baths - remember to pull the hair in the ear canal too.
When should I start brushing his teeth? Do you do it everyday?
Start ASAP as they really don't like it to start, but it is SOO good for them and yes every day is the BEST!
When can he start walking on a leash? We haven't attempted to put the harness on him yet.
He can start on a harness anytime. I would put the harness on first and let him wear it for an hour or so under supervision and then after about a week of that - add the leash.
What age is a good age to take him to puppy kindergarten? Is Petsmart or Petco okay for this?
They usually have to have all of their shots I think anyway!
With all the problems with had with the vaccines and the emergency vet, etc., I am thinking of switching vets already. Is Banfield (attached to Petsmart) okay? They have a good plan cost wise.
I have never used them as they are not in our area
I am leary about giving him the heartworm tablet that the vet gave us because the reaction he had to the vaccines. Also, he has to go on a medicine because his stool sample came back positive for giardi (spelling?). She said it's a powder to mix with the food and we should start it next week. Should I wait to give him the heartworm tablet the following week? The breeder suggested only giving him half the tablet. What do you think?
I have NEVER heard of giving a half a tablet - always the full amount as you never know where the concentration of the meds are at. Hearworm is pretty safe, but if you are worried I would give it to him the AM so you can make sure your vet is open so no ER visit IF something happens.
How harmful would bird seed be to him? I posted before that we have pet cockatiels. They are messy and there's always a little seed on the floor. Well, being the little cruiser he is, he is always cruising around and trying to eat the seed. I stop him, of course, but I'm sure he's already eaten a couple of seeds. We will do a better job of sweeping and vacuuming, but we're never going to get it all. Hopefully it's not too terrible for him if he ingests a few seeds.
I don't know? I don't have birds 
What do you do about cords? He keeps trying to chew the cords to the lamps in the living room. There is no light fixture in the ceiling so we have to have the lamps. I keep distracting him from them but he gravitates back there.
We say no and give a toy or chew like a bully stick to take their minds off of it. Yes puppies are full of it! LOL
I guess that's enough for now! I really appreciate everyone's helpful comments.