Night Sky Oberver's Guide Volume's 1 & 2 / Kepple & Sanner (A great resource)
Stars and Planets(Peterson Field Guides) / Jay M. Pasachoff & Donald H. Menzel.
Secrets of the Night Sky / Bob Berman
Summer Stargazing / Terrence Dickinson
The Guide to Amateur Astronomy / Jack Newton and Philip Teece
Sky and Telescope Magazine
Or go on-line or to your local book store and find many more items on Amateur Astronomy