On-Camera Flash by Neil van Niekerk

I've been slowly going through the book On-Camera Flash by Neil van Niekerk - I'm not even halfway through it yet - but I've been very pleased with it so far. He is able to explain flash in a way that makes sense to me and finally makes it click. I don't do as much portrait photography as I might like, though I do get the opportunity to take photos of people at work, though only on a point and shoot camera, but I feel like I am already doing a better job at taking photos with flash.