Hey Tom!
Nice to see another yankee boy from CT on this board. Basically you should let nature take its course. Leave the tree out all summer and into the fall. Once the leave fall in autumn you are safe to put the tree in cold storage (an unheated garage, tool shed, or a cold frame).
This will provide the tree with some protection from the harshest winter has to offer, but still allow it a nice rest in its dorman cycle. In the spring when the weather warms up the tree will start to throw out some buds and should then be moved to the outdoors. This past winter was a real pain in CT because it was 75 during the day and 30 at night...i would bring the trees out before work and back in again when the sun went down.
While your trees are in their dormant period you just need to provide them with the occasional drink of water (they shouldnt dry out completely, but they probably wont require daily watering)
As pootsie mentioned Shanti Bithi is in CT and is great... but their hours leave much to be desired (they are closed most sundays
) I prefer to take a drive up to New England Bonsai in Bellingham MA (near Foxboro-- Patriots Stadium. They have wonderful selections of pots, finished bonsai, starter plants and some great classes.
Bonsai West is very nice too, as is Royal Bonsai Garden, but if I am going to spend 1.5hrs in the car I want to make the trip worth my while, and Ive never left NE Bonsai disappointed. Look them up on the web too.
Private Message me if you have any more questions, as I am happy to help.
-Moe
P.S. Bonsai Gardens of CT is a waste of time...you'd be better off buying from home depot.