Do not panic!! you still have a lot of time
First, you can go to the free download section in the upper right hand corner and d/l some infant flash cards.
For the first few months of his life, he just need to look at black/white (sometimes red) flash cards, give him tummy time and make faces at him
As far as LR and LM, you can start them when he is around 5 months old, in the mean time you can just prepare your self with all the material he needs after he is 5 months old. Enjoy! good luck!