You've got your email. You've done the forms. Now find your class.
On a mobile phone?
New to Classroom?
Get the app.
iPhone App Store | Android Google Play
Choose "Add another account"
On a mobile phone?
Already got Classroom?
Open the app.
Click the circle (with your initials or photo) top right, and then "Add another account"
On a computer?
Go to classroom.google.com
Click the circle (with your initials or photo) top right, and then "Add another account"