If you don't see the Warpwire link in the left side navigation menu, you may need to turn on Warpwire for your course. Only admins are able to turn on Warpwire.
Click "Settings" at the bottom of the left side navigation menu for your course.
Next, click the "Apps" tab. The list of external apps should include Warpwire. If Warpwire is not installed, contact your institution's Canvas team.