Hi,
Link Building is the major process of every website..for this we have to create many backlinks to a website that will be possible to through Off-page techniques:

* High PR Directory Submissions
* Social Bookmarking Sites
* Article Marketing
* Video Marketing
* Local Business Listing
* Local Search Engines Submissions
* Ads Posting through Classifieds
* Link Wheel
* Web 2.0
* Slides Sharing
* RSS, Feed Burner
* Profile Linking
* Forum Commenting
* Blog Commenting
* Guest Posting
* Podcast
* Press Release
* Social Media
* Pinging Services