Puppy? When should I walk him? Vet? Name? etc?

I am getting a puppy later this week. The breeder is giving it its shots. When should I get it to its first vet visit? When should I start walking it, and when should I start training? It will be six weeks old by the time I buy him. PS is Teo a good name? He is a pomeranian papillon mix,and please show me pictures of what he might look like when he is older. (looking for professional oppinion)