How to Acquire & Earn Links That Boost Your SEO?

From Search Engine Journal I got following suggestions:

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• What to do before link building: How to make sure your website is in top shape before you move on to getting links from other sites.
• Broken link building and link reclamation: Find and reclaim lost and broken links to your site, or find unlinked mentions and generate new inbound links.
• Social engineering for link building: How to use controversy, ego bait, and helping others to attract links.
• Data-driven link building: How to use information and research to drive quality backlinks.
• Creating link-worthy content: Using visual, interactive, and engaging content to earn links.
• What linking tactics to avoid: What bad links can get you penalized by Google, and what link tactics are dangerous or ineffective.
  

What Techniques do you follow in this purposes?