Take flash pictures and learn about the maximum flash range at different ISO settings. And check out the color of a scene when you select automatic white balance versus manual white balance. Knowing your camera also includes becoming familiar with your camera's software, cables and other accessories. You will be able to transfer your pictures to your computer in a flash if you learn to load your software correctly. You also should know where to plug your camera cable, where to find the file on your desktop and how to access pictures.
Most digital cameras come with image-enhancing software.
If you become familiar with it, you probably can fix some common mistakes, including underexposed and overexposed pictures and redeye in flash pictures. I see, I remember. I do, I understand.