https://www.bbc.co.uk/bitesize/articles/zmpxbdm#zpwm7yc
I am sorry that going to the pain in my hands at the moment I cannot do copying and pasting but this article is very worthwhile and it includes a video
It’s hard to find something at the right level and it does not make you have to memorize lots of long names that you will never really find useful in your writing
Because what matters is to write not to fast examinations about writing although it’s obviously very useful to know as much as you can manage of techniques even if you don’t want to use them.
How my heart sings 