How do makers optemize their projects for SEO ?

I am building projects for quite some time and I mostly like to work on the technical side of projects eg. coding, deployment, planning features, etc. Like most developers, I am not good at the marketing side of projects.

Recently I am watching a lot of people which I follow on Twitter talking about SEO and its importance. I know a little bit about it like using proper meta tags etc but not much advance.

So I just want to know how makers here deal with SEO and if they have any tips to learn more about the subject?