This short video takes you through the steps to find the Nexus365 website with the Teams web-app, and to sign in. You will need to know your Oxford single sign-on and password.
https://ox.cloud.panopto.eu/Panopto/Pages/Embed.aspx?id=a786f7f7-0727-4d46-b148-ac84009ff78c&autoplay=false&offerviewer=true&showtitle=true&showbrand=false&start=0&interactivity=all