@KatieLowell ...
I'm not sure if you realized this or not, but you've posted your question to the global Canvas Community website. The Community site is a place where you can come to ask questions about Canvas, suggest new ideas for features in Canvas, read written tutorials, watch video tutorials, and much more. Unfortunately, we cannot help you here regarding signing in to your South College .edu e-mail address. This would be a question that you'd need to ask to South College's IT support team. Microsoft Word is a word processing application. It's not, in any way, related to accessing your e-mail or having anything to do with password authentication.
I was trying to find a page for you on South College's website that you might be able to use to get IT support, but all I found was this page:
Contact Us For More Information | South College
You might also try the "LIVE CHAT" link at the bottom right corner of the site where you might be able to have a chat with someone in real-time to see if they can point you in the right direction.
I hope this information will be helpful to you. Good luck!