Have you read this book on flash photography?
My personal opinion about this book is quite "informal". He writen in almost spoken language and the layout of the book is unlike a technical book and yet it contain so much useful information. I find it so attractive that I could not put down the book. I even read it while travelling to lesson instead of course notes.
Canon users include me may once awhile scratching head trying to catch those Nikon flash system terms but still manageable.
I'm half way through the book and put it into practice. Its worth to experiment it and will learn even more than the words.
Feel free to discuss about this book.