SEO is both a simple and complicated field of work.
Simple in it’s goal.
Complicated in how that goal is achieved.
That is because Search Engines have a simple goal with a complicated process for calculating and achieving that goal.
I explain all about this in my article on the core principle of SEO.
If you’re new to SEO, or frustrated with how your website is performing then the core principle is a good place to start.
View all of my articles about SEO.