As most of you know backlink is a link(URL) of your website on another website or in other words a link towards your website from another website. These are a few free and easy ways of building backlinks for your site.
Submit to free link directories:
Submitting to free link directories will give you an easy backlink. Make sure while submitting your site to a link directory you find a proper category, the one most relevant to your website to get maximum SEO benefits. Here is a list of free link directories.
If you want to submit your website to paid ones, I don't have a problem with that, just make sure the paid directory to which you are submitting your site is not a scam.
Social bookmarking means you bookmark your favorite sites for everyone to see them and just as everyone else on the internet can see them, search engine spiders and crawlers can also see them and count those a backlink towards your site. There are many social bookmarking websites like StumbleUpon and Digg. Join them and submit your websites.
Make sure you don't submit links to different pages of a single site again and again. This can get you banned from the site. Apply 1-10 rule. This rule means that a page from the same domain should not be repeated before submitting 10 pages of other domains. So if you own 10 or more websites, then you can keep on submitting pages from your websites.
A very easy way to aquire backlinks for your website. All you have to do is to make a comment on some article which allows commenting and place a link to your website in the URL section while commenting. But it is not as simple as it looks. Your comment should be something that adds some value to the article itself and the writer of that article should not get an impression that you are commenting without even reading his work. Secondly, try to comment on posts having same keywords as your website. Thirdly, see if you can put the keywords of your site instead of your name in the name column of the comment, this is good for your search engine rankings.
Writing and submitting articles to article directories is a great way of getting a backlink as it gives you a high-quality backlink. Write good short articles and submit them to article directories like ezinearticles.com with link to your website in the resource box of the article.
There are other ways of getting backlinks too, other than the ones I mentioned above.The ones I mentioned here in this article are the easy ones. Try implementing these for building links and meanwhile I might write another article on link building for your websites.