This is the most complicated, yet crucial step in getting your website prepare for SEO.
This tool is called Google Webmaster and can be accessed here: https://www.google.com/webmasters/
This tool will help you learn which keywords are working best on your website, and what keyword ideas you should work on to build out even more blogs and topics on your website to help drive even more traffic to your website.
This step can likely take you 1-4 hours to figure out and finish, because it will require some hardwork and thinking depending on the web platform you are using.
If you need any help setting this up on your website, feel free to leave a comment or get in touch at: firstname.lastname@example.org