Recording of past tutorials should now be available in the Recordings.docx of your tutorial's MS Teams. If not, remind your tutor to update that document with the recording links.
If you have questions related to past tutorials, you can post them in your tutorial's MS Teams channel, and tag the tutor. If there is no reply within a reasonable time (e.g., 24 hours), remind the tutor via another means (e.g., via his/her email, given here).
Any queries regarding admin matters should be sent to the course email (cs2103@comp.nus.edu.sg) or posted in the course forum (do not send them to the tutor).