Can also recommend this one. I'm pretty new to sailing and get caught out when I have to figure out such things like 'tweaker'= barber hauler and the relationship between 'opening the leech' 'increasing twist' and 'sail belly/camber'. It seems everything has at least two names and everything's inter-related, so if I can make sense of this book and see how it can be used in a race perhaps anyone can!
Lots of stuff on sail and rig settings for conditions but not much on spinnakers/'kites' (but then again I wouldn't know if there is much to say!). Written for both cruisers and racers.