It's also really easy. On Linux, you can simply do:
# Install Go on Linux.
curl -L https://golang.org/dl/go1.8.1.linux-amd64.tar.gz | sudo tar zx -C /usr/local/
# Add to ~/.bash_profile.
export PATH="$PATH:/usr/local/go/bin:$HOME/go/bin"Edit: Updated for Go 1.8.1. It's even easier now, because one can rely on default value of GOPATH instead of having to set it.