Click your name in the upper right hand corner. Then click "Edit Settings" on the right.
Change your "Display Name" to what you prefer to go by. Please use a proper first and last name, as this is the name I will see in your correspondence and electronic submissions.
Set one or more e-mail addresses and other contact methods for receiving course notifications.
In the same profile area, click "Notification" on the left. I recommend reading through these and editing them carefully. In general, I recommend turning most of these off; otherwise your inbox will get a lot of notifications for things you probably don't want.
Read the Syllabus carefully.
Finally, explore Canvas and get to know the system. Familiarize yourself with the Calendar and make note of all deadline dates for assignments. See the following video tutorials for more information: