Login to Canvas.
Authorize and open BrainFuse.
Once you have clicked on Brainfuse, you should see the window:
Click the Launch button.
Then you will need to Authorize. (You will need to do these first steps only once.)
Finally, you should see the Brainfuse page:
Use what you need from their site to assist you in your courses.
Open a course and click on BrainFuse.
After you have opened Canvas, click on any of your courses.
Brainfuse will always be on the toolbar at the left side.
Watch helpful videos about how to use this service.
After you have connected, and chosen your options, you might want to watch some helpful tutorials about how to make full use of Brainfuse.