Just to share, what I always tell my young students' parents, start cultivating the habit from young, you can start as early as newborn. What I did was read to and with my kids every night. Sound and motion interest kids, so it will be best if you can integrate those in while reading.
I purchased this program call the Total Development Program some time back for my elder daughter when she was 2. Now that I have 2 children, both of them can use the program. Very useful program I'd say. They enjoy it a lot as the program comes with a device that create sounds from the books. I'm a teacher for most part of my life, going through many early learning programs and books, i think the Total Development Program is one that I'd recommend to my young students' parents.
Hope this helps.