Accessing MyUoB via app (also available as a webapp) is probably essential. It lets you see your personal timetable, find available computers and study spaces, find library resources, access up-to-date module information, view your university emails and calendar… and it has a map of the campus.
It’s a good idea to check out the other University apps too. Familiarise yourself with them so that you are ready to use them when you need to.
Course material is run through Canvas. You will be able to access Canvas when you have completed initial registration. Courses will appear when they are ready – in the rare cases that they do not, email your department.