Canvas Android Guides:
Students
https://community.canvaslms.com/t5/Canvas-Student-Android-Guide/tkb-p/student_android
Teachers
https://community.canvaslms.com/t5/Canvas-Teacher-Android-Guide/tkb-p/teacher_android
Parents
https://community.canvaslms.com/t5/Canvas-Parent-Android-Guide/tkb-p/parent_android
Canvas iOS Guides:
Students
https://community.canvaslms.com/t5/Canvas-Student-iOS-Guide/tkb-p/student_ios
Teachers
https://community.canvaslms.com/t5/Canvas-Teacher-iOS-Guide/tkb-p/teacher_ios
Parents
https://community.canvaslms.com/t5/Canvas-Parent-iOS-Guide/tkb-p/parent_ios