There are things you pick up as you go along which are good to know (GTK). Here are four which I have learned.
How to place folding chairs against the wall. When folded, those chairs have two legs which stick down farther than the other two. Lean the chairs against the wall or each other with the longer legs out, that is, away from the wall. That way the center of gravity of the chair makes it automatically lean toward the wall.
How to store a broom. Brooms have memory. You may not have realized that but they do, but it isn’t measured in gigabytes. If you lean a broom against something while sitting on its bristles, those bristles will bend from the weight of the broom and sooner than you would have thought, they will not straighten out and the broom will be harder to use. Instead, hang the broom by the handle so the bristles hang free or lean it against the wall upside down. That keeps ‘em straight and ready to use. That applies to a push broom, too, but it can rest on the floor if the bristles are pointed OUT since it is resting on the sides of the bristles and won’t adversely affect them. You can also hang a push broom by the handle or the hole in the other side of the bristle bar.
In woodturning, never make the inside bigger than the outside. Seems logical but it is easy to do if you are not paying attention. This is especially a problem when hollowing. Keep the sides of your piece the same even thickness from top to bottom and measure, measure, measure.
Finally, and sort of a corollary to the last one, never go too deep, something I preach to my students. I was reminded of that just the other day when I went too deep in a really pretty piece of Oregon tiger maple I bought. It sure made finishing off the base more difficult.