I want to learn SEO and copywriting

I want to do a lot of things that are related to content creation, I'll mention them :

- Medium Writing

- Youtube Content Creation

- create a personal website for freelance

I'm currently a freelancer on Upwork and Fiverr, and I also want to be able to optimize my gig's SEO and ranking.

can you please suggest to me a course (whether it's free or not), book, or youtube channel to learn SEO and copywriting?