FREE TODAY - 03/27/2016: Photoshop: Photoshop Lightroom: 17 Tips You Should Know to Get Started Using Photoshop Lightroom (Graphic Design, Adobe Photoshop for Beginners, Digital Photography, Photo Editing) by Edward Bailey http://www.amazon.com/dp/B01DGXSM5W/ref=cm_sw_r_pi_dp_b799wb1A3X8VK
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.