I think I was confused because he mentioned wiki-style page for users as the title.
@taonmatt
I’m pretty sure you can create a closed post and edit this anytime you want, you can put in under a category or maybe a tag if you like that. I assume you are the only one that has such a summary post?
You could pin this post so every user sees it, it will unpin for them personally if they read it. There are some creative ways to reach this. You could use this plugin to create an header shortcut to your post, for example.