I will be shooting portraits this weekend (first time ever attempt) and am curious of the best possible lighting positions for singles and couples for the startup. I know I can chimp and will probably move setup for different moods. However, the nerves are a bit frayed thinking about it, so I was hoping some of you can give me a good starting point to increase my chances of not looking an idiot. I expect to be shooting indoors 8 ceilings, but if the weather cooperates, may move outdoors for some shots. My gear will be one each SB-600 & SB-800 with adjustable 6 light stand for each, 5-in-1 32 reflector set with disc holder and stand and a 43 white satin umbrella, various clamps. Also have a white, neutral and light blue backdrops (okay cotton sheets). Ambient light is questionable. I will be shooting with a Nikon D80 and a variety of lenses to choose from, but likely to stay with 35mm f/2, 50mm f/1.8 and 85mm f/1.8. I have a couple of books on portraiture due to arrive today, but doubtful any thorough reading before doing the shoot. Thanks for your help and advice.