If you are worried about platform and browser compatibility with Canvas, you can stop right now. Canvas is compatible with Windows, Mac, Linux, iOS, Android and any other device that will run a “modern” web browser. As far as browsers go, Canvas supports the latest two versions of any web browser and recommends using the latest web browser of your choice that is available, plus the most up-to-date flash plug-in.
You can read about this and more on the Canvas support site: http://guides.instructure.com/s/2204/m/4214/l/41056-which-browsers-does-canvas-support
If by chance you are using a browser version that is NOT supported by Canvas, you will be presented with a warning on the site to this effect.