Seconding the Hashicorp projects. I learned a lot about HTTP from reading the Vault code. go-kit and oklog are also fantastic. Peter Bourgon has written a good

Seconding the Hashicorp projects. I learned a lot about HTTP from reading the Vault code. go-kit and oklog are also fantastic. Peter Bourgon has written a good article about Go best practices and his open source projects really aim for clean, readable code. Also join the go slack if you haven't yet.