Have you found any non salesy resources for non-technical people for AI?

I used to work in dev tools - the quality of guides and content for that community is incredible. Seems like you can find everything for free and someone has legitimately put in a ton of effort to make it great. I find this isn't the case for most other disciplines. Marketing, sales, SEO... it's all full of pretty thin content that's behind a signup wall or closed community. Why is that? Any resources that breaks this mold? I always liked content from Ahrefs for SEO.