There are dozens of good opening books, but we can't recommend the best one unless you provide your rating (and optionally your style, what you've already studied, and what you expect to achieve from studying this book).
Assuming you are a beginner, 10 opening rules is probably enough, but if you really want a book now then you can't go wrong with "Improve Your Opening Play" (modern, shorter) or "Ideas Behind the Chess Openings" (classic, longer).
anyone reccommend chessbooks that are good for studying opening play?