I got a notification on macOS saying “New extra: Working with tags” available. I thought that would be availabe under Extras (three dots in the left sidebar), but I can’t seem to find it there? Where should I look for Extras?
In the Extras sidebar, if the number after the category is emboldened, there’s something unread in it.
You’re looking in the right place, but I can’t see that one either. I can’t remember whether I had a notification for it, but there was one a couple of days ago for “How to Focus on Writing”, which is there. There’s also “A Word about Reinstalling” from later the same day, for which I don’t think I’ve had a notification. Maybe something needs to refresh before the Extras update?
Thanks. Maybe there’s something else missing, I’d be curious about that extra about Tagging but can’t find it now 
Help > Tutorials.
Found it - thanks Jim!
No problem.