Then count to see whose caterpillar has the most sections. As you approach a birthday or special event, check off the days on a calendar, letting your son count to see how many days remain. Read the stories and poems your son enjoys, moving your finger under the words as you read aloud. This will help him see the link between the words on the page and the words you say, which is an important step in preparing him for reading. From your local library, check out alphabet books that are entertaining.
Kids especially love ones that rhyme or have silly words or fanciful pictures.
Just have fun with the books and his learning will come naturally over time. Or turn each page into a small poster and mount them around the walls of his room. Most of us first memorized the alphabet by singing the age-old alphabet song. If your son likes to sing and dance, try singing the alphabet song in different rhythms and make up dances to go with it. Have your son tell you a story while you write it down just as he says it.