I found a video through the lovely Deb Schwedhelm. She posted it on her blog, but please also take a look at her gorgeous photography.
It's a video by a photographer for photographers.... no matter if you're a pro or not or if you're in your beginnings like I am. It felt like he is directly speaking to me. It's a bit "long", but it's worth beeing watched till the end.
Visit Zack Arias.