My dad has a female dachshund, and he's wanting to get a male also. Potty training a male dog has him a little worried. If he has the male neutered, won't the dog be less likely to want to mark territory?
Yes, if the male is neutered it will make him LESS LIKELY and prone to urinate/scent mark around the house, but there is no %100 guarantee. Males can still learn to scent mark, even if neutered and it's a learned behavior, so once it's started, it will almost be impossible to stop. If the male scent marks already and is neutered, most likely he'll continue scent marking.
The best thing to do is to get a puppy and potty train, then neuter at the appropriate age of 6 months.
As for actual potty training, there is not difference really.