If you’re a Nikon shooter who wants a better grasp of how your camera’s autofocus settings work, check out this 11-minute video by Steve Perry of Backcountry Gallery. He runs through all the most critical aspects of the AF system, from the types of AF (e.g. single, dynamic, group) to how to set your custom functions to suit your system to your style of shooting.
While a good amount the information is applicable to other camera brands, Perry’s information is geared toward Nikon DSLR shooters who do action/wildlife photography.
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.