My daughter's 4-H leader used to say it took 90 hours to teach basic obedience. His point was that the kids needed to be working their dog every day, not wait until the week before the fair. If you did little else, you could do it is a week. I think most one night a week obedience classes run about 3 months. So how long depends on how hard you work on it.
I am glad you are training your Pomeranian. Too many people fail to and end up with a dog whose behavior would never to tolerated in a larger dog. Many households are run by 10 pounds of dog. Find a good book or class. As I keep saying, you can learn to play the role of top dog by reading some books or going to a good obedience class. A good obedience class or book is about you being top dog, not about rewarding standard commands with a treat. Start at
Raising Your Dog with the Monks of New Skete There are some newer books in the sticky at
http://www.askmehelpdesk.com/dogs/in...tml#post251804 Many of them aren't the basic book you need.