Dogs don't need to be bathed as much as people think. the max he should be bathed is once a month, normally though, he should only get baths when he needs one (begins to smell bad, not just doggie. Covered in mud, or begins to looks dirty). Too much and it will dry out his skin.
My fav shampoo on my last few dog has been TropiClean in Papaya Plus. Its all natural and smells like subtle pina-colada. you don't want to get anything too strongly scented because it will irritate his nose. My dogs on average only got bathed a few times a year, and all the water hose-downs they wanted during the summer months.
for me, the key to remember is that a dog isn't supposed to smell like baby powder, or candy or flowers 24/7. They should have a natural "doggie" smell. When they stink, yepper its bathtime!

Also, about the ears. Since it is your first pup I would purchase an ear-cleaning solution and have the vet show you how to properly cleanse them. For more casual cleansing, a damp washcloth (no soap!) can be used to clean out the outer layers of the ears (never use Q-tips or try to get "into" the ear to clean it because you could do more damage than good). I like the stuff Halo for Pets puts out because its all natural.

For the nails, I'd recommend having a vet or an experinced pet owner (people who have owned dogs before that KNOW what they're doing when clipping nails), or even a groomer show you how to clip the pup's nails. If you clip them too short, you could cut into their quick, which hurts a LOT.

Another tip about clipping nails, I've heard that if you handle your pup's paws a lot while they're young, they'll be OK with you clipping their nails. They might not enjoy it, but they'll be OK with you handling their paws because you did it often when they were pups.

As for how often....I can't give you any advice on that, since I've never clipped my dogs' nails...it was always my mother or brother that did it.