Hopefully this makes sense.
I'm currently working on a project that has snowballed into many technologies that I have a reasonably shallow understanding of. It would be great to know where to find answers and ask questions more generally.
I don't want to limit responses to just my problems though so feel free to contribute anything you think fits this format. I'm particurality interested in finding the active communities around technologies and where they hang out.
An opinionated example from me would be: ROS (robot operating system), the construct sim, ros discourse
If anyone could inform me of some good Postgres resources that would also be awesome.
The other place i've gotten great support in the past is the Postgres mailing lists. It always takes effort to ask good questions, so that doesn't change terribly much no matter where you are asking.