Unofficial ARM tarballs for Go:

https://dave.cheney.net/unofficial-arm-tarballs

(Update: Since Go 1.6, ARM was supported officially.)

A tour of go:

https://tour.golang.org

Go offical blog:

https://blog.golang.org

Go books:

https://www.golang-book.com

Go China Community:

https://www.golangtc.com