Package Control is the Sublime text package manager with which we can easily search and install thousands of packages thus extending sublime text functionality.
Since Sublime text is cross platform so these instruction will work with all Operating Systems: Linux, Windows and OS X.
1. Open up your Console in Sublime text via Ctrl + ` shortcut or view > Show Console
2. Visit https://packagecontrol.io/installation#st3 and copy the python script from there depending on your Sublime text version (2 or 3)
3. Paste the copied script in the console and press Enter, wait a few seconds for it to be installed.
4. Restart Sublime text, i.e. just close and reopen it again.
How to install any package with Package Control?
your package will be installed in a few seconds, you can see the status in the left bottom corner of the windows.
Here is a video to make things super clear!