I’ve been thinking of contributing to foss projects with more than testing and bug reporting. I want to contribute to mainly open source game engines. There are a few that are mature and underrated, but lack any documentation for a user to get started. This is why I decided to do documentation, but I don’t know where or how to start.
Is there any general rule/guidelines for getting started with this ? I’m looking for anything that can help a beginner documentation writer


In your blog you can write tutorials. Or if you had trouble getting something done, you can write how did you do it. They will be good useful notes for other people, possibly including your future self :)