Exposure Cheat Sheet
Keep this "Exposure Cheat Sheet" handy to help better understand how exposure works.
Canon Exposure Simulator
Need more practice and other examples try the Canon Exposure Simulator.
Experimenting with Exposure
Practice manually setting your exposure by completing the Experimenting with Exposure Assignment here.
Exposure Modes
Practice using shooting modes with the Exposure Modes Assignment found here.
High Dynamic Range
Experiment using creating high dynamic range images by completing the High Dynamic Range Assignment here.