The first concepts that were covered talked about light and the two main lighting situations that we daylight photographers incur.
The first is: Specular Light
This first image is an example of Specular light. Had I been next to anything to show shadows, there would have been deep shadowing from the harsh bright light. This lighting can create some very vivid images, but you have to catch it at the right time of day.
The second is: Diffused Light.This photograph was taken right when some storm clouds were rolling in and this sailboat was heading to the safety of its harbor. There are no harsh shadows are strong lighting lines. There is soft even light.
It is easy as a nature or outdoor photographer to forget what lighting you are using, but taking a moment to think about it can make a huge difference in your images and how you set them up.