Here’s a brief look at Google’s two basic types of penalties and how to know if you’ve been hit by one.
Additional Resources:
Google’s Webmaster Guidelines
https://support.google.com/webmasters/answer/35769?hl=en
What not to do, straight from the horse’s mouth. You can find out what Google does and doesn’t like. Mostly, though, it’s telling you what you shouldn’t do.
Moz’s Google Algorithm Change History
https://moz.com/google-algorithm-change
Moz is one of the leading resources in digital marketing. They’ve been keeping track of Google’s algorithm changes since 2000.
The (Almost) Complete Guide To Google Penalties (Manual & Algorithmic)
https://www.quicksprout.com/2015/09/02/the-complete-guide-to-google-penalties-both-manual-and-algorithmic/
If you’re unfamiliar with any of Google’s penalties, visit this post. It lists and explains both manual and algorithmic changes.
source
