Its always a good idea to use Google before posting your questions. Many questions people ask have been asked before. So to save time always use google before posting a question. google.com
The GitHub wiki is a useful resource for all LinuxGSM related topics.
LinuxGSM has a Steam Group where you can get general support for LinuxGSM related stuff.
LinuxGSM has a GitHub Issues page where you can submit any bugs and feature suggestions.
Join the LinuxGSM Discord community server. Discuss your LinuxGSM setup, get help and advice.