when we first started using the ybcr dvd's when our little one was 6 months old, we didn't use any other products though we did "read" books to him, lots of books! Our little one is now 3.5 yo and he's an avid reader, reading anything he can get his hands on -- books of 2nd & 3rd grade level, magazines, recipes, ingredients on food labels, the mail...anything! As long as the products are fun & your little one is exposed to lots of words ifrom a variety of settings, I think you're doing just fine