It's difficult to know what to suggest because I don't know exactly what "relatively new to chess" means in your case. Sometimes you can get an idea of where a person is by looking at their results on here, but you haven't played any games yet. I'll recommend a couple of options anyway.
First choice would be a combination of two books: Play Winning Chess by Yasser Seirawan and A World Champion's Guide to Chess by Susan Polgar.
Second choice would be The Complete Idiot's Guide to Chess by Patrick Wolff.
I'm not sure where to put this, but anyway. I am relativly new to chess and I am looking for a chess book to help me improve and I'm not sure which one to buy. Which chess book would you suggest?
Thanks in advance.