May 2021 the new Google update will start to have rankings implications. It is something that will be talked about a lot before it happens as it is not often Google says explicitly what they are starting to count for ranking signals. Below is a collection of some great articles to start this journey and to get ready for some new things that we all have to start monitoring more.
Introduction to Core Web Vitals
Defining the Core Web Vitals metrics thresholds
Best practices for measuring Web Vitals in the field
Optimize First Input Delay
Optimize Cumulative Layout Shift
Optimize Largest Contentful Paint
Core Web Vitals for SEO: An Overview