If you are brand new to astronomy, say have your first telescope and want to learn more, think twice before buying this book. Or, any book for that matter. I have yet to find a book that begins with the very basics and works from there. (Just ordered Astronomy for Dummies, in hopes this will meet my requirement).
My experience so far is that astronomy books are densely written, and begin with complex concepts and terminology. This one is no different.
Also note how old this book is. I suspect, but don't know, that it needs to be updated.