Unless you have been hiding under a rock for the past few weeks you already know about the new changes Google will be implementing on April 21. In case you have not heard Google will be rolling out a mobile optimization algorithm According to Google's Zineb Ait Bahajji of the Webmaster Trends Team, she was quoted as saying that the algorithm will be used to expand their use of mobile-friendliness as a ranking signal and this change will affect mobile searches in all languages worldwide and will have a significant impact in their search results. This is set to be the largest update we've seen from Google to date in terms of how many sites will be affected. Bigger than Panda and Penguin! This algorithm is an expansion of their mobile ranking demotion algorithm em that they launched back in 2013.
Technical Papers by Kevin Morrison
The bubble effect is mostly to blame for why a website appears to be losing search position. Search is not obvious anymore and the search engines have placed a profile on you (not your site) where they are only showing you things they think you want to see and you do not have a choice in the matter. There are ways to combat this but it takes proactive action on your part to help get your site noticed. I am going to layout some basic SEO guides here and I will try and be as logical as I can so you can follow along with this. I am going to assume you know nothing about optimizing for search results and how SEO works even though you might. I would rather you have all the data as it exists today.