I haven't contributed to any project before, but I guess here is as good a place as any. I created a write-up that can be used for a blog post to introduce CentOS Stream 9--based on the guidelines and ideas listed at <https://hackmd.io/@centos/HJqiY5NHt>.
The full document is here: <https://hackmd.io/@forbushd/BJC9Q9DSY>
Any feedback and changes are welcome, as well as suggestions for future contributions.