Using Boards

I’m also interested in taming Boards. I’m with Atomik (The built-in Theme of v. 9) like @deanhawthorn.

@EvanCooper: I f I click on your link, it takes me to a page:

A yellow alert tells me: This documentation is not for the most recent release version of Concrete CMS.
If I go to the "Release Version; 9, I end up on this page:

The same happens with an essential link by @jero in this post:

Where is the current, valid documentation?

I’m confused.
Stefan