Use social bookmarking for get some traffic.And most of them helps you to get some dofallow backlinks as well.I suggest pinterest , Reddit and myshouter.com
Puramix I think you need to start with social media and bookmarks if you think your content is unique and good.Bookmarks and social media helps in fetching early traffic.If you get in good results start doing SEO and if it also keep on making you better use PPC campaign if you can afford to pay.
If your site has a lot of images of smartphones... you can use clipboard and Pinterest to share the images and get traffic to you. It is really good. Also Facebook is a nice way.