I like this guide. It’s friendly. It’s clear. It’s platform agnostic. It’s written in an accessible way to help other people. It has hyperlinks to other articles that explain what he means when he uses trade talk. And it’s written by someone with unimpeachable credentials. I’d be happy to deal with someone who used this as the basis of their understanding.
His five steps:
1. Get a feel for how they work.
2. Learn the format.
3. Pick your idea.
4. Flesh out your story.
If you like this approach and would like to get more specific, I recommend you check out my guide to fleshing out an idea, which corresponds with steps 3-5.