To install go, refer to this post.

Installing Atom

Add PPA and install atom.

curl -L https://packagecloud.io/AtomEditor/atom/gpgkey | sudo apt-key add -
sudo sh -c 'echo "deb [arch=amd64] https://packagecloud.io/AtomEditor/atom/any/ any main" > /etc/apt/sources.list.d/atom.list'
sudo apt update
sudo apt install atom

Installing Atom Go Plus

Go-Plus helps to make go development easier in atom. To install, just to Edit -> Preferences -> Install. Search go-plus in Install Packages search bar then click install.