Follow the below techniques for good Backlinks:
1. Article Submission (High PR Directory with Unique content)
2. Blog Posting (Like: Squidoo, BLogger, WordPress, Blog.com, Hubpages, LiveJournal etc. with Unique content)
3. Directory Submission (High PR Directory)
4. Social Bookmarking
5. Classified Submission
6. Review Posting
7. Forum Posting
8. Blog Commenting
9. Video/Image Sharing
10. Local Business Directory Submission
11. Press Release
12. SMO (Facebook, Twitter, LinkedIn etc)