Best course for deep learning Whitehat SEO?

Hello everyone!

I know basics of SEO but want to gain more knowledge in deep. Looking for course suggestions from where I can learn more about it.

Is "SEO that works 3.0" any good? Anyone watched that course by Brian Dean?

I have heard a lot about that course but still don't want to waste time before starting it as there were negative reviews too around the internet.

Do you guys have any other recommendations or suggestions?

Thanks in advance!

Checkout Seobythesea it's a blog, but I can't post links yet. Checkout backlinko, stevenkang.me... Hubspot, Semrush.