Great free/cheap marketing resources!

Hey folks, I spent ~ $1500 to learn a few things about marketing. I realized pretty late that a lot of free or cheap resources are much better. Sharing a list of resources from where I learned about paid marketing, copywriting, and SEO. Google Ads - https://www.udemy.com/course/the-ultimate-google-adwords-training-course/. > Got this course for ~ $3 and this is the only course you need to learn about Google ads Facebook Ads - https://www.udemy.com/course/facebookadsstrategies/ > Got this one as well for ~ $3. He teaches the basics of Facebook ads in about 3 hours and from there you can easily apply the learnings. Copy Writing - https://www.udemy.com/course/modern-copywriting-writing-copy-that-sells-in-2018/ > Again ~$3. If you are a marketing generalist, this course will teach you all you need to know about writing decent copy and you can improve using AI tools. SEO - https://buildd.co/courses/startup-seo SEO course by Karthik. Thanks to him for keeping this gem for free. I would love to know the course that you folks took.