I would like to buy the Understanding Exposure book that so many of you rave about, but you need to spend $25 to get the free shipping. So...I was wondering if there is another "must read" that anyone would suggest. I am interested in shooting mostly children/families using mostly natural lighting, but am going to get a Speedlite in a couple of weeks (so breaking out of my mold a bit). I'm sorry if this is a repetitive thread. If you know of a thread that had this same inquiry, could you just redirect me? Thanks so much!