A good way is to submit press release submissions. This will syndicate your press release to other sites that are related to your niche and you'll get backlinks from related blogs.
Hi! Thanks wich696, I want a more information that what I have to do to submit press release submissions.
Write articles and submit them to directories, comment on related blogs, use bookmarking sites, these are great ways to start build links
Well, you need to use multiple ways of link building because we need natural back links also. You can get back links as a guest blogger as well, you can exchange links with relevant website, make sure that you are doing three way link exchange. You can do social bookmarking and directory submission also, lots of people ignore these two but they are very beneficial in link building, it is true that through directory submission and social bookmarking your ranking would be slow but it is stable ranking in SERP, social bookmarking and directory submission would maintain your site's SERP, it won't let your site's ranking fluctuate at SERP.