So, I have a Canon Rebel XS, a Canon 50mm f/1.8, a Canon 100-400 L f/4-5.6, and a Canon 17-40L f/4.0. I also have a Canon Speedlite 430 EXII. I want to get into outdoor portraiture, possibly engagement photos. Can anyone tell me how to get into this or point me to some good resource son how to learn? I currently only do landscape and wildlife, and dont know much about flashes or artificial lighting. Thanks!