A fundamental function that you can find on pretty much any camera is exposure compensation, and depending on how you shoot, it can be a crucial aspect of your workflow. This excellent video will introduce you to exposure compensation, explaining what it is and how you can use it in your own work.
Coming to you from David Bergman with Adorama TV, this helpful video will show you what exposure compensation is and how it can help you. Essentially, exposure compensation is a way of telling your camera to take its calculated exposure and then adjust the actual exposure in one direction or the other based on your preference. This can be useful in a variety of situations. Camera meters are imperfect, and there are many situations where you can expect a consistent error, such as when you are shooting in snowy conditions, where your camera will often make white snow appear gray and dirty. I tend to use an exposure compensation of -2/3 stops when using auto ISO in manual mode, as this helps to protect my highlights. There are lots of scenarios where you might want to use it; check out the video above for everything you need to know.