Does Mikrotik have an official book/guide?

Hello, does Mikrotik have any kind official book/guide etc? Like for instance Cisco official cert guide…does Mikrotik have such one?

Documentation is on the website help.mikrotik.com (with old version on wiki.mikrotik.com also often useful to check).

https://mikrotik.com/training/

https://help.mikrotik.com/docs/display/ROS/RouterOS