Atronomy - by Ian Ridpath
http://us.dk.com/nf/Book/BookDisplay...617332,00.html
Great book, covers a lot of stuff, but not overly too in depth, useful pics, references, monthly sky guide. Around $20-$30.
Excellent book, highly recommended.
Cheers Norm
PS: definitely a book you can take with you during astro viewing at night.