You will find that there are dozens of different tutorials available online, ranging from books and courses that you can pay for to tutorials and video lessons that can be downloaded for free. Each of these courses is broken down into sections that will address each of the different sections of formula so that you can learn them in groups. This tends to make it much easier to fully grasp the necessary formula for each section before moving on to the next segment.
Another way to use a spreadsheet program that has become popular is to re-create 8-bit graphics from childhood video games and turn them into larger-than-life scenes. It‘s very simple to adjust the row and column height so that it becomes a perfect square, and most of the 8-bit games lacked any sort of definition, shading, or blending making them even easier to turn into spreadsheet art. There is also a huge market for this sort of thing. People that grew up with those types of games are now into adulthood, and many of them love to share things from their past with their children, nieces, nephews, and anyone else that cares about it. There is a certain amount of whimsy to these characters as well, and this type of classicism will never truly go out of style.