A few advices from my end are:
- Think yourself and remember what annoyances, troubles and issues
you had with your daily use of Git. They are good problems to
tackle, as you have a first-hand experience with them. Don't
go hunting for "problems to solve". That will likely end up
wasting your time (and reviewers' time as well).
- Start by reading everything other people post, until you notice
whose posts are worth your time reading. And then, concentrate
on following the discussion threads they are involved in, to
learn how the best discussions are carried out on this list.
Thanks.