What is the first thing to SEO??

First thing you should do, you must submit to any directory. So, that can make your site index at search engine especially at google search engine. After that, you can make backlinks. To make backlinks, we will take much time to do that. If you okay with that, it's no problem. But, some people just take built backlinks service from people that offer that service. So, we will saving some time there and can focus other work.