I come back to this book again and again. The people who criticise it are, as they admit, already doing these things with their toddlers. Though I doubt it... there are so many good activities. The fact is, most of us are not doing these things - other things and the older children get more attention.
The beauty of the book is that you can quickly look through and something will leap out at you. Or maybe you decide that you'll do an activity, but tailor it to your family in certain ways...
I have an older child and this book reminds me to let the toddler be a toddler - not an issue if this is your first, but a toddler's needs can get squeezed out, and this is the remedy.
Highly recommended.