I do not think there is one book that will allow you to gain the knowledge of everything you will need to keep bees chem free, or any other way you may choose.
Some in my collection are:
"Honey Bee Biology and Beekeeping" by Dewey M. Caron. ISBN 1-878075-09-8 This is set up and used in college courses. Very well rounded book and discusses biology and some detailed information that may be lacking in some more pure forms of books centered on just keeping bees.
"Beekeeping for Dummies" ISBN 0-7645-5419-0 Not focused on any detailed way of keeping bees, and probably needs updated. But a nice read with many tidbits and information that the other books lack. Some is very basic, but a great way to build a foundation on beekeeping.
Ross Conrad's new book "Natural Beekeeping". (out on loan) Although I have many gripes about the book, it's the first attempt or the best attempt at a book focused on a more natural way of beekeeping. I find it useful but is all over the board with information.
If you want to get deep into bees, "Bees - Lectures by Rudolf Steiner". ISBN 0-88010-457-0 If you do not know what a "Steiner" school is , never owned a multicolored VW bug from the 60's, or never had hair beyond your neckline, this may be too much to read. :shock:
ABC-XYZ (out on loan) Probably the best overall text on beekeeping details. The older books are good reference material but are dry, dry, and well....dry! The newer one that just came out is updated, but again, I find other books just more enjoyable to read. ABC-XYZ is one you grab for a fact or a detail you need to reference.
I think for one's path into beekeeping no matter which one you choose, the information will come from many sources. Ask lots of questions, realize when advice is being given from those with agenda's or from those with blinders on, and always be willing to try it yourself as nothing all that bad will happen. Have fun, and try something new without knowing much about it. You may be telling all us what you found out... :-D