Head to the log in page at https://canvas.instructure.com/login/.
Click "Forgot password" (Please note that it could take a couple hours to receive the password reset email. In the meantime, you can check your spam folder just in case it gets sent there!)
***In order to receive the password reset email, you must have verified your email at your initial sign up time.
Not sure if you did? It doesn't hurt to do it again!
The day your first created your Canvas profile, you would have received an email with the subject line, "CONFIRM REGISTRATION: CANVAS."
Find that email in your inbox and you will find a link to click to finish the registration process.
After that, follow the steps above to request your password reset link.