These are following SEO strategy
Article Submission, Forum posting, Blog Commenting, Social Bookmarking, etc are the best

do Seo then create social media pages ex:facebook,google+,twitter,linkedin
and fetch your website links in google webmaster

Focus on PR, Guest Post and high quality links.

Thanks to all for your best suggestions.

Thanks to all of you for your wonderful suggestions.

You can do a digital marketing course if you want to learn all the pros and cons.

you should increase more back link with genuine content.