Best courses on content distribution?

I think HubSpot, SEMrush offers some valuable courses. Also, Marketing against the grain, Marketing millenial podcasts are helpful in learning about content.

Honestly, having done a couple (that might’ve sucked though) it hasn’t really helped me. I usually ask questions to the people who have done well, and try to see how I can use their tips and tricks. Other than that, what has worked the best is trying everything out for at least, I repeat at least, 3 months and seeing what sticks and looking at analytics and comparing strategies