@dsriram2002,
What kind of computer is he exposed to everyday? Does he have access to cell phones, MP3 players, computers, tablets, etc...? Since the child is relatively young you will have to keep it simple.
What access do you have to the public library? Many public libraries have been evolving in terms of what tech they provide for their users. Desktop computers (obviously), wifi, laptops, now tablet computers, etc.... Libraries have now become public technology hubs for those who don't have the resources to these important tools at home or work.