Guest posting
Article posting
Blog commenting
Social media posting.
If you want to make Dofollow Backlinks which will boost your ranking, then you should follow these steps.
1. Guest Posting.
2. Web Directories & Local Citation.
3. Content Marketing.
4. Blog commenting.
5. Use Forum
6. Use Document Sharing Sites
I would like to suggest you sign into your Google Account
Open <!-- m --><a class="postlink" href="http://productforums.google.com/forum">http://productforums.google.com/forum</a><!-- m -->
Continue to insert your blog link wherever necessary.
Guest posting and Forum posting are the best techniques to get quality backlinks.