As a newbie to the homeschooling scene, I rely a lot on the recommendations made by veteran homeschooling moms. So far, their recommendations have been spot-on.
My son already had quite a collection of books, so I was pleasantly surprised that we didn't have to buy too many other books. Here is a list of our favorites. If you have any recommendations, please let me know. Also, these books are fantastic even if you don't homeschool.
Science/Nature:
* "Teaching Montessori In The Home: The Pre-School Years," Elizabeth G. Hainstock."
* "Guiding Your Catholic Preschooler," Kathy Pierce and Lori Rowland.
* "Honey For A Child's Heart," Gladys Hunt.