Blogging for Business course by Ahrefs

Two years ago a company I have worked at, purchased the $800 course "Blogging for Business" by Tim Soul at Ahrefs. The course was helpful enough.
Now its totally free. Check it out here https://www.youtube.com/playlist?list=PLvJ_dXFSpd2tbI3mYhAO8oZ2NYMrJuNPq

There also are three bonus interviews in the end of playlist.