The calendar, announcements, due dates, assignments, etc... are all located in canvas.
User log in is the same as logging into a school computer.
User Name: Firstname Lastname (Ex: Albert Einstein)
Password: S.00(lunch #) (Ex: S.0012345)
As a parent/guardian, you can view all class information in canvas. Directions to make an observer account are here: https://guides.instructure.com/m/4144/l/73163-how-do-i-sign-up-for-a-canvas-account-as-a-parent.