# CentOS SIG Guide
CentOS Special Interest Groups are smaller groups within the CentOS community that focus feature work on or awareness around a topic related to CentOS Linux and CentOS Stream.
This guide is for anyone interested in starting, managing, or contributing to a [CentOS Special Interest Group](https://wiki.centos.org/SpecialInterestGroup).
You'll find on this (always involving) website best practices for each step in the process, including :
* How to [join](auth.md) a SIG
* How to [upload sources](git.md) to the lookaside cache
* How to start [building](cbs.md) RPM packages or other artifacts
* How to [test](ci.md) your packages
* How to [push to mirror](delivery.md) network
* Rules for [dns entries](dns.md) under sig.centos.org