Yes these slides and videos do have the wrong date for this event but I have reviewed them (on 1/9/2024) and they are still completely accurate and up-to-date!
Resources for further training
Tutorial video on all the aspects of a wikipedia account, showing how to go all the way from creating an account to publishing a new page. How to Edit Wikipedia - a 2018 tutorial
We are going to use VisualEditor for this event. However, you may wish to gain experience with the source editor as well if you will be editing more extensively.