I think one of the biggest fan faves here is the Kwigy Bo line. I don't know about training a little one, and the bags aren't cheap. I trained my then 1 year old fairly quickly. The bag is stealthy, airline approved, and has space for all my things, and his. I'm sure you can find a nice cheap one on ebay to get the training started, and then eventually get a pricier one when your pup is full grown.
How exciting for you! Wish I could add #2 to my group. Maybe next year?
