Relative newcomer to digital photography (18 mths on D90) and total newcomer to using a flash. Bought in hurry a SB 700 for trip but used it very little with not good results. Review of some of the threads here tells me that it is a foreign language and Nikon user manual is hard for me so, any good books on flash photography out there that assume no prior knowledge? The more basic the better especially if Nikon focussed. Thank you.