To build backlinks, first check out what is the requirement of your business. Then consider the of-page activities for building the backlinks because each activity is having its own importance.
Share useful and relevant content that match your keyword.
Link only to relevant website.
Writing Guest Posts in Other Sites.
Frequent Press releases helps in link building.
Identify reliable link network for your link building.
Write Useful, Interesting, and Fresh Content
Create Highly Shareable Content
avoid all tricks and design that damages the user experience
create resource and faq pages
create round-up posts
create templates and oyhet useful documents
write and publish quality guest posts
write for other blog and website
make sure sour blog is Search-Friendly but not Over-Optimized
repurpose your content
Three things you have to concentrate.
1) On-Page Optimization
2) Off-Page Optimization
3) Keyword Ranking
First try to be perfect in On-Page. If you do that 50% percent of your SEO work will be over. Then concentrate on Off-Page by site submission, social bookmarking like that. Finally concentrate on keyword ranking.
backlinks cant be increase overnight :).Try to place links in a timely manner on the site and onto innerpages which give your site maximum exposure on search engine.Its the best way to target links from various domains which increases chance of better indexing
There are some points you need to concentrate on while building the back links and that are link relevancy, so no to spamming, building backlinks through getting signatures from the forums, yahoo answers is a good technique.