Nikon Creative Lighting

Nothing can ruin a good photograph faster than a rude
flash exposure. Flash photography has become an art in itself
and should be mastered by all aspiring photographers.

Nikon owners, and those with cameras that can use the Nikon
lighting components should get this book, study it, and
improve your photography 100%

http://www.user-groups.net/books/nikon_flash_photography.html