You can follow below steps to install Go 1.8 on Fedora / Ubuntu. (It should work for other Linux distribution as well but it is only tested for Ubuntu / Fedora).
Download the Go 1.8 bundle by clicking here.
Extract the downloaded bundle using below command,
tar -C /usr/local -xzf go1.8.linux-amd64.tar.gz
Add below to your to your path variable, you can add this to either of bash_profile or /etc/profile.
Reload the configuration & GO will be available to use.