I have made many mistakes and learnt from them, The first mistake in 2013 is to not google how to do SEO because many of the links and pages are directed at old school SEO from before the penguin and panda updates. Keyword density is now 1% unlike many sites say! Obvioulsy Duplicate content is a no no, asking in here is a start .Do not use keyword stuffing. The mistakes I made worked for me last pre Penguin and i had many pages ranking page 1, but since the Penguin, I have had to clean my site and make sure I have no old school SEO running through it. Some plugins can destroy your rankings my advice would be to double check before adding some new plugin offering amazing results. I have added plugins that have killed certain aspects of my site. Content is king and the new new rules of SEO is social ! The more people that love your content and share the more google appreciate the effort. Depending on what you site is aiming for (Which market) Do not get backlinks from low pr sites, Good backlinks is the key, again you can see online so many companies offering high PR sites backlinks for $20 etc, Stay away, be on control of your own links the atleast you know what you are linking too. Just write amazing content and share share share.
