I've recently moved to a new company and started managing their online community. Their community runs on a platform that I am not familiar with, so I have a bit of a learning curve at the moment. The other catch is that the online community is also used for employees as their internal community - Interesting dynamic to me.
I typically go after metrics for the last six months and get a sense for what's working, what needs improvement, etc. I then present the information and so where I would like to make changes, if needed.
I'm looking for feedback from community managers here on what you would do in the first 100 days of taking over a new community.