SEO trick for enhancing website ranking

Hi there. I found the below site which can show you how to enhance website ranking on google..
https://moz.com/beginners-guide-to-seo/how-search-engines-operate

How to use robots,txt to crawl certain page or file
https://moz.com/learn/seo/robotstxt

User-agent: Mediapartners-Google
Disallow: 

User-agent: *
Disallow: /search
Allow: /

Sitemap: http://ipohtech.blogspot.com/sitemap.xml