Im going to post a very good course about List Building
made by a reputable company: Leadpages.

I think this could be useful:
https://lptraining.leadpages.net/ema...-building-aff/

Im not in any manner affiliate with Leadpages.
Only this is my niche, list building, and i found it good to view and download, and, FREE WITHOUT OPT-IN.

Hope this is useful for the Community.