https://www.youtube.com/watch?v=wkSdtbZbhio&list=PLDfhD4-dQNN4xBc-2NxSXLacqstlJNrNX&index=3
Videos by author of "Ditch that Textbook" on setting up Google Classroom and timesaving tips while using it.
Setting up Google Classroom for Dummies *
https://www.dummies.com/education/internet-basics/how-to-create-a-class-in-google-classroom/
* Note- you do not need to use a Google for Education account. You can set up a Google Classroom on your individual Google account for practice. The only requirement is that the classroom not be used for real students or a real class.