Below are some resources where you can find help in using Graphite.
Email - ✉ email@example.com
Font development - join the ↗ Graphite Font mailing list to connect with others who are developing Graphite fonts.
Graphite system development - join the ↗ Graphite Development mailing list to discuss Graphite system development.
Graphite application integration - the ↗ Graphite Development is an appropriate mailing list for these discussions.
Bug reports - can be sent to the ↗ GitHub issues repo
GDL Tutorial - font developers who would like to learn GDL may find the tutorial helpful.