Easiest methods - Get backlinks from blog comments, buy links from relevant sites, forum posting, article submission and press release submission. Done with all of them, then move ahead to social networking websites.
Article marketing is one of the best most effective ways to build backlinks. Write a good article related to the theme of your website, and create a keyword-optimised anchor text backlink at the bio box, then post your article to ArticleMarketer. You can also check out FreeTrafficSystem.com. It posts your articles to 30 blogs. Each of your articles can have 3 links each.
With article marketing you can get more leverage out of just 1 article if you use Unique article wizard. Also try bookmarking your site with as many social bookmarking sites as possible making sure that every title is unique but inserting your keyword phrase in both the title and description.
Submitting your site to directories takes a lot of manual effort, and that is why many bloggers leave out this important step. The truth is that backlinks at all of these directories will go a long way in improving your sites PR. This is because these are quality backlinks, as you can see with PR numbers next to each respective directory.