I, too, am very touched by your concern for your son; this in itself is a great sign.
I have just asked three other people their advice, and here are some suggestions from all of us:
1. Spend quality time with him.
2. Teach by example, especially good manners.
3. Read to him every day and encourage him to learn to read when the time comes.
4. Spend time with him outside as he grows older so that he will not grow up spending too much time playing video games.
5. When he becomes old enough, get him a dog, who will provide love and whom he can love.
6. Don't get him too many toys; instead get him some quality toys that he can spend some time with and which will encourage his imagination.
7. Take him to the zoo as he gets older.
8. Keep him away from potentially bad influences as he gets older.
9. Don't spoil him by giving him everything he thinks he wants.
10. Try to make learning fun rather than making it seem onerous.
11. In as many ways as possible, let him know as often as possible that he is loved.
Very best wishes to you!