There are many options to find backlinks to your website. Here are few easy ways to find backlinks
Google Webmasters - If you have added your website to Google webmasters then it does most of the job in finding backlinks associated with your site. Go to your webmasters and click on links, here you should be able to find all the backlinks to your site.
Apart from this there are many free and paid online tools which you could use to find backlinks. Here are few top sites.
- Moz Open Site explorer