Documentation: https://certbot.eff.org/docs
Software project: https://github.com/certbot/certbot
Notes for developers: https://certbot.eff.org/docs/contributing.html
Main Website: https://letsencrypt.org/
Let's Encrypt FAQ: https://community.letsencrypt.org/t/frequently-asked-questions-faq/26#topic-title
IRC Channel: #letsencrypt on Freenode or #certbot on OFTC
Community: https://community.letsencrypt.org
ACME spec: http://ietf-wg-acme.github.io/acme/
ACME working area in github: https://github.com/ietf-wg-acme/acme
Mailing list: client-dev (to subscribe without a Google account, send an email to [email protected])
