The Sublime text 2 editor is an amazing new text editor for Linux and Windows that will make your text editing duties much easier. Firstly, you need to add the PPA for Linux Mint 15/Ubuntu 13.04.
sudo add-apt-repository ppa:webupd8team/sublime-text-3
Then update the package repositories to enable the apt application to find the new packages.
sudo apt-get update
Then install the sublime-text-installer package. This will install and then fetch and install the sublime text tar-ball.
sudo apt-get install sublime-text-installer
Once this is done, you will have the new Sublime text 2 editor installed. It is that simple.