You should go to your local shelter and see if there are any smaller dogs that need a home. You aren't really narrowing down the options, so it's hard to say which breed is best...However, if you aren't going to go to obedience classes, I wouldn't reccomend a terrier -- they can be stubborn, and they need lots of socialization..Go to
www.dogbreedinfo.com to see a huge list of breeds.
Here are some more questions that might help narrow down your search...
-Do you mind a breed known for digging and/or barking?
-Do you want to dog to get along well with other dogs, cats, or small animals?
-Do you want an obedient dog that will always follow your commands?
-Do you want a breed that will do well in dog sports (agility, flyball, etc)?
-Do you want a watchdog?
-Is the dog going to be spending most of it's time indoors or outdoors?
-Would you mind having a breed known for health problems?
-Would you pay for professional grooming?