Install Sublime Package Manager

As described here:
http://wbond.net/sublime_packages/package_control

Press Ctrl+`

Then in the console that opens, paste this:

import urllib2,os; pf='Package Control.sublime-package'; ipp=sublime.installed_packages_path(); os.makedirs(ipp) if not os.path.exists(ipp) else None; urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler())); open(os.path.join(ipp,pf),'wb').write(urllib2.urlopen('http://sublime.wbond.net/'+pf.replace(' ','%20')).read()); print 'Please restart Sublime Text to finish installation'

It will take about 1/1000 second to run, and then Restart Sublime.

Now, when you go to Shift+Command+P you can type in Package Control: Install and select from all the available Sublime Packages. Much nicer than installing them by hand.