I think some kids takes longer to talk than others. My cousin is almost 2 years and ive never really hear him say anything besides "nana" for banana. Have you considered having a speech therapist? Reading to him is a good idea, they have those books for kids that has very simple words with pictures that may help him out. Try using really simple words like "hi", "bye", "yes", "no" with him and he will eventually pick it up.