Several resources are available to help you get the most out of Google Analytics.
Analytics help center
The Google Analytics help center (support.google.com/analytics) has articles on all features and aspects of Google Analytics, including implementation, analysis best practices, and troubleshooting.
Analytics Academy & Google Analytics IQ
Analytics Academy is a free online learning platform that offers comprehensive training in Google Analytics and data analysis. You can also use Analytics Academy to prepare for the Google Analytics Individual Qualification (IQ) exam. Passing the Analytics IQ exam gives you an industry recognized qualification. Learn how to prepare for and access the exam.
Videos on the Official Google Analytics YouTube Channel cover beginner to advanced topics.