How to Promote a Website

Index website once each month through multiple search engines.
Submit website to multiple online directories
Create business social media pages for the business on Facebook, Twitter, LinkedIn, Instagram, Tumblr, Flickr and Pinterest.
Post on each of these social media every day.
Post on each of these social media many times throughout each day.
Each post must include a link to the website, relevant and engaging text, and a compelling image(s).
Provide many high authority backlinks to the website.
Avoid low authority backlinks.

Guest blogging can help
Create infographics.
Join appropriate Facebook groups
Use Instagram stories