I recommend read things by @sykochica @timcliff and some posts I make for new users to learn about the system.
It is important to READ before you begin WRITING new posts. This way you have any idea on what good posts look like.. A lot of people come onto the system trying to make money before they get familiar with what makes a good post.
There are some good tips... lots of people have written them. There is also a search tool at the top of the screen ( a little magnifying glass icon) if you click it and type words in like "good post" or "what should i write" or "new user" you might get some interesting results to read.
Thank you, really useful advice