Here's an update for week 4:
For this week, I wrote the 5th section of Instructions for Migration from Mailman 2 to Mailman 3. In this section, I wrote steps that should be taken after post-migration.
Week 4 update can be viewed here: https://medium.com/@ariessa_norramli/google-season-of-docs-week-4-update-f92...
Best Regards, Ariessa Norramli