MikroTik and RouterOs

Hey, I was wondering if the video courses on Mikrotik routers and routerOS are worth studying at all?

There are several classes, a beginners class, class on using GNS3 for labs, class on security engineering, a class on hotspot management, etc.

I am just wondering if it is worth putting effort into learning this material.

I missed a MikroTik community after moving from Reddit. Here is a start to it.