Using a WordPress instance like the one offered to our users, we have opened a blog some time ago about howtos and notes on Free/Libre and Open Source Software (FLOSS). It's called FOSS-notes.
You can find a mix of SysAd and regular GNU/Linux user articles. Sources are usually available from our Gitlab as well.
I propose that anyone who wants to share and advertise their blog to the world add a post describing the what, why and where in this thread