Trick, Photography Book - How to believably blur backgrounds in Photoshop! (Without the funky edges and halo effects! Photoshop tips. - Now YOU Can Create Mind-Blowing Artistic Images With Top Secret Photography Tutorials With Step-By-Step Instructions!
Exposure Lock (AE-L Button) is the abbreviation stands for Automatic Exposure Lock. It is useful using automatic and semi-automatic shooting modes. Where has this information been all my photographing life? So freaking helpful it's not even funny.
Portrait Lighting Setup poster to be helpful. It contains 24 different portrait lighting setups using a variety of lighting gear and lighting patterns. Click the image to see it up large. Also check out some of the further reading.