The one thing I've learned about photography that has made a difference

Remember how I took a photography class in the fall? Well, I didn't learn much. I mean, if anything, I learned how very much there is to learn! But besides discovering the depth of my own ignorance, there IS one very important thing I learned that has made my pictures better, and that's how to use the "aperture" setting on my Nikon, instead of using the flash. This, in combination with the inexpensive purchase of a "plastic fantastic" 50 mm 1.8 lens, has made a big difference in my pictures. ...