If I was back two years what would I need to know so that learning the camera wasn’t such a chore. You see most if not all information about cameras isn’t complete. And in some cases outright wrong.
First. The camera doesn’t record what you see. It only records a range within the scene much like a slider covering 6 or so notches on a ruler. So if you pull the slider down it will lose the same number off the top and visa versa. Simply put, if you are inside you can shoot the outside garden perfectly but the room will go black, or you can shoot the room and anything beyond the window will blow to white.
Second. If the intention is to print the photos to whatever size. No part of the shot can be blown to white. And the reason is very simple. THERE IS NO WHITE INK IN A PRINTER. So if the shot, like my window in  is blown, all you have on the printed photo for that area is the paper, and whatever colour that is.
Third. ALWAYS shoot RAW. This is a file format that doesn’t do anything in-camera which allows for at least the possibility to recover something in the photograph.
Forth. All cameras have a native ISO. This is the sweet spot. And the best place to find this is in the AUTO or ‘A’ settings. For regardless of what the manufacturer says about 50/100 ISO these numbers tend to below the ideal which swings around 200-260 ISO for cropped sensor cameras. And why it matters is that you are forcing the software to the edge of its ability which tends to generate distortion. The same is true at the upper range. And really at the stupid numbers what are you going to photograph.
Fifth. Put the meter on Spot Mode. Put the Autofocus on S, so when you have focus, you have it on what you want. And you’ve metered it to the spot also.