Sorry, but most of this stuff has not been written yet, but I hope there's enough here to get you started.
I spent hundreds of hours "doing art" at school, but during most of that time I was never taught anything at all. It was only towards the end that an art teacher did actually teach something, so I will pass that on to you in a minute. Let me begin, though, by showing you something that might inspire you:-Kseniya Simonova: Sand Art. (Ukraine).
It usually takes ten thousand hours of work to become one of the best in the world at anything, but a thousand hours will be enough to make you pretty good at it, and a hundred hours might make you reasonably okay at it: you should never just give up after a few attempts at anything, because even the first ten hours will often seem to get you nowhere. You might think you can't draw, and if so, you're probably right, but if you work at it for long enough and go about it in the right way (that's important, because ten thousand hours of doing the wrong thing will get you nowhere), you might find that you can turn yourself from someone who can't draw into someone who can: you have to work really hard to gain skills, but they are in no way impossible. If you really want to be able to do something which you know other people can do, you really can get there, but you'll have to put in the work, and you'll probably need to be steered in the right direction as well.
I'll start by teaching you the thing that I should have been taught at the beginning of school rather than at the end. If you want to draw something, You should measure it with a pencil. Hold the pencil at arm's length, held out towards whatever it is you want to draw, and make sure you're looking at it side on (so both ends should be the same distance away from your eye). You can then look past the pencil and imagine that it's as far away as the thing you are looking at beyond it which you want to draw. You can now measure the height, width or length of whatever it is you plan to draw against the pencil. Once you've noticed how far along the pencil the object stretches, you can then transfer that length to the paper simply by putting the pencil flat on the paper to show how far apart you should draw two dots, one of them perhaps being the top of an object and the other being the bottom, or maybe the two opposite sides of an object. It might be the length of a car, the size of a house, the height of a tree: everything can be measured in the same way, and this will help you make your drawings look right. In time, you may learn to draw things accurately without having to measure them so carefully, but that takes thousands of hours of practice. Start by measuring everything: it seems like a very mechanical way of doing things, but it works, and you can gradually train yourself to measure things just with your eye instead of using a pencil.
More will be added to this page later.