Pat Flynn is great at this stuff. His blog is smartpassiveincome.com. He is full of very practical and actionable insights in the current landscape of e-commerce and building out a series of passive income generators. He really does stand up to his mantra of providing high quality free content to drive his sales. He puts a ton of great content up for free. I imagine his paid stuff is worth it, especially if it comes with the chance to work directly with him. Be warned – he has a ton of great copy to go along with his great free stuff. He is a real expert in this space. He also does a podcast and has started a Youtube channel, all of that is able to be found from the blog.
https://www.smartpassiveincome.com/launching-my-first-online-course/
Great example article of the quality of his free stuff. Individually, these are mostly pretty common-sense conclusions. But Pat is very good at threshing out and reflecting on some pretty straightforward-seeming material that ends up leading to considerable insight and nuance.