Link your website to any other website is actually called backlink. You are taking refuge in backlink for SEO own website which differently.
Backlink through social media
Facebook then you make a change and then post the link to your site’s information page, you will find backlink.
Create Channel Youtube is then put the link to your website will become backlink.
Free open directory website approval to put your website in the directory and then Confirm by backlink you will become if you will.
Make him give account for similar forums to your website and answer member questions and link to your site in it.