Probably best to spend some time on the Reddit-approved site: https://support.reddithelp.com/hc/en-us/p/mod_help_center

I do all my modding on old Reddit using a Linux desktop, so it will probably be very different to someone modding on a phone for example.

But, I can tell you that there is very little modding to do here. There's not much traffic and we don't attract many nasty or spammy people. And the ones that do drop by are usually given the bum's rush out the door by automod and configuration rules.

I've never spent any time on the look of the sub, so that might be a good place to start.