To get good help, make sure to include enough context of the issue in question. A help post should generally include:

Development discussion for Nix, NixOS, Nixpkgs, NixOps, RFCs, etc.

Any nix-related projects are welcome to post announcements here. This generally includes new projects, project releases.

A topic to post best practices that you found.

Only links, reddit-style.

This category is for jobs offerings. If you are looking for Nix and NixOS developers or need to get some project done, feel free to post here.

Announce community events like meetups and conferences

Special Interests Groups represent groups of interest. People that are interested in a specific topic. Use the sub-categories to classify the posts or on the top-level to request more categories.

Discussions about the discussions, and related software.

This category is for people who want to interact with Discourse by email. There are many reasons to use email, one of them is accessibility, another one is convenience and offline support.