It’s not strange if the backlink is required to improve pagerank blog. There are many ways to search for backlinks, can exchange links with other bloggers, or register on the social bookmarking site, or submit blogs to the web directory. So many free web directory sites on the Internet, for that, use your best to register your blog there.
How do submit url to free web directory?
It's easy, just visit to Great Directories, select an existing site and click submit url or add url, enter the data and description of your blog there. Wait a few days, you will be confirmed via emai, whether accepted or not, depending on the content of your blog.
Hopefully your blog is accepted and registered at free web directory. Usually, if accepted, then there will be a confirmation via email notifying you that your blog approved.
Good Luck !!