You can divide SEO in two (Three) major parts, thay are :
1. Onpage SEO (Tweaks on your site)
2. Off Page SEO (Links pointing to your site)
{3. Social SEO (Create social profiles, link to yuor site, add friends and be active)}
For more details, read this thread here :
http://www.affiliateseeking.com/foru...in-2012-a.html