The steps and instructions for this are fairly straightforward as laid out at the source, which you can find here:

https://sublime.wbond.net/installation#st3

For the uninitiated: Once you’ve opened Sublime Text, hit “ctrl+`” or from the navigation menus open the View drop down and then move to the Show Console option. Once your Console is open (it will pop up as a text field at the bottom of the window) simply copy and paste the code provided at the link above and watch the magic happen.