Gilkar wrote:
David Busch - Nikon Z6 digital photography
While not a simple instruction book, it is comprehensive and easy to read. Ir also has a great index if you are looking for something specific, (like resetting bracketing). The first few chapters go over the basics in detail, and then the following chapters get specific on how to customize your camera for your exact needs. I would not be without mine. If you do not wish to make the investment, there are thousands of how to's on You Tube
This was going to be my suggestion as well. I looked for and found a used one after I purchased my Z6. Excellent reference book.