You've posted this question in the global Canvas Community website where people from all over the world come to ask questions about Canvas ... as well as do other things like reviewing "how to" written and video tutorials about Canvas, submit Feature Ideas for Canvas, etc. Did you mean to post this question in your Canvas course rather than in the global Canvas Community? We can help answer questions about Canvas, but not so much about preferred software for desktop publishing.
Here is a quick video tutorial on how to use Canvas discussion topics...if that is where you meant to post this question:
Hope this helps a bit!