I recommend you at least read this part of the tutorial to get your brain thinking, Part 3 will still totally apply to you if you are using your DSLR in Auto mode, or if you are using a point and shoot camera. Let me get this stuff out of the way here before getting into the meaty beats about how to use light most effectively.
DSLR Camera Modes (Auto vs Manual etc)
Lets take a moment to talk about using a semi-pro or pro camera like the Nikon D80/90. When I first got my fancy camera nearly 3 years ago, I was using it in Auto mode, and sometimes when I am very tired I still do. The scary truth is I’ve used my camera in Auto for many of my published photos, and they not only turned out well, but really amazing sometimes. I felt when I first started using the camera, that it was far more important for me to focus on my use of natural light, composition and styling then it was to stress about how in the world to have the photo come out properly exposed. Proper exposure is a beast, it’s confusing and intimidating. At-least it was to me. All those numbers on all those dials. I had just had a baby, I was sleep deprived, lets just keep it simple shall we? Maybe this helps you not be so intimated by those “pro” cameras, truth is due to technology they are not very scary at all.