I have a son who is going to be 4 in 2 months. He didn't start speaking until almost 2 and I was also concerned. Now I wish I could get him to stop asking questions ALL the time! LOL I am having him tested this fall because I want to get him into a program. I would suggest reading everything you can and "feeding" your son as much as he can take in. My son loves letters, puzzles, books, songs that you have to play along (wheels on the bus et. al.) and musical instruments. He does not have great fine motor skills so we make letters with finger paint. If you can figure out his learning style it makes it easier to teach him. I wasted a lot of money buying teaching aides that didn't fit. If he is anything like my son, he will guide you. Good Luck!
