How to create an effective SEO strategy?

First of all, you have to understand all SEO concepts, like on-page, off-page, backlinks, and so on.

then you need to do keyword research, and build a keyword list around the topics that u wanna create content about.

then optimize your site and your pages.

then start with link building.

and make sure to track your keyword rankings and monitor your backlinks while you are working to see your progress.