Get it straight from Google on the Google Support page
Learn by product, job or task in the G Suite Learning Center
Find guided instruction or go in depth with Google for Education Training Center
Learn quick tips on tools and devices, get inspired with ideas and collaborate with other teachers on the Google For Education Transformation Center
The Secret Menu for Google Slides, Docs, Drawings and more. A blog post on Ditch That Textbook.
Keep Your Google Classroom Organized. A blog post on Ditch That Textbook