$ curl -O https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz # Or your platform's tarball
$ tar -xvf go1.8.linux-amd64.tar.gz # Or your platform's tarball filename
$ mv go /usr/local
$ export PATH=$PATH:/usr/local/go/bin # Add a line to your .bash_profile or .bashrc to add Go permanently to your PATH
$ go version # This should say "go1.8"