post #21 of 21
I highly recommend the Gesell institute books on child development: http://www.parentsroom.org/gesell.htm.

A disclaimer though... While they are great books for getting an idea of what your child is ready for, do take their recommendations with a grain of salt. They are certainly not AP. Luckily these recommendations take a backseat to the developmental information.

I often find these in used bookstores, btw.