Daytripper 75, thanks for the recommondation about libraries and museums. I will look into that.
Solaris, I can tell you are very resourceful and put in the work looking for information. I realize I am going to have to do that too.
Polarbear, I think you are right that I should not worry about him socializing so much at 3. He is pretty much into his numbers and letters and thats what he gets excited about. He will talk about other things but not with the same excitement. He is a charming boy, but also shy and this could be part of it. I guess I'll just have to see how he does as he gets older. The good thing is 2 to 5 year olds don't really pick at each other the way grade school kids do. They can be really mean and I've seen is first hand substitute teaching.
CCN, thanks for letting me know that your kids are doing ok at an older age. This makes me feel better and more hopeful about my son. He does have some kids he talks about from his daycare. Also I take him to some mom to mom groups here and there. He gets the chance to play with other kids but mostly clings to me or other adults. He really likes being around older people so he can spell words and sign them with the sign language ABC's. Maybe its because adults think its so amazing and kids his own age could care less about that. I just hope he becomes interested in more at some point so he will be more well rounded.