Please see the attached Quick Start Guide to get a basic understanding of Teams, but keep in mind that you're automatically part of your Department Team if there's already one!
Also, head over to Microsoft Teams Video Tutorials for further visual step by step guides that will help you get acquainted with the application quickly.
If you have any other questions, please look for it under this same support portal and if you can't find an answer to your question, please create a support ticket or email us at: