Recent Google Updates and SEO Trends for 2018
https://alphametic.com/recent-google-updates-seo-trends-2018
The New Facebook Algorithm: Secrets Behind How It Works and What You Can Do To Succeed
https://blog.bufferapp.com/facebook-algorithm
Siteliner is a useful free tool to identify duplicate and common content on your site that you want to keep in check, as well as analyzing the word count of your text content.
http://www.siteliner.com/