We got this as a gift for my son's first birthday. He is 13 moths old now and has loved it from day one. He spends a lot of time using it as a walker and he also loves the 26 letter blocks that come with this toy. He does not yet uses the features on the front of the train (clicking alphabet blocks in place or the alphabet booklet) but he LOVES "posting" the blocks through the hole in the top of the train and watching them shoot out the bottom. He also loves to "post" the blocks through our baby gate down our cellar steps! All in all this toy has enabled him to play independently without much supervision so I can finally get some stuff done in the kitchen.
Also, I think the small size mentioned by other reviewers is great for us because he can walk with it into places he couldn't go with a bigger toy, for instance around our dining room table, which increases the size of the circuit he has created for himself to run in. The small size makes it light weight but with a little practice he was quickly able to pull himself up without knocking it over.
He's not quite tall enough to use the ride-on features but I am sure he will grow to love all this toy has to offer soon enough.