Welcome to Olympia! This is addons.mozilla.org.
We have some good install docs if you want to try it out. We'd love your help! You can come talk to us on irc://irc.mozilla.org/amo if you have questions.
Please report bugs here: https://github.com/mozilla/addons/issues or https://github.com/mozilla/olympia/issues
You can access the AMO dev enviroment at https://addons-dev.allizom.org/
You can access the AMO stage enviroment at https://addons.allizom.org/
You can join our mailing list at: https://mail.mozilla.org/listinfo/dev-addons