...
Steps 1 - 3 are only needed the first time you go to download sites from Pantheon. Step 4 is needed every time, though we're working to find a solution that makes this step unnecessary. If you experience errors when downloading a site, double-check that you performed step 4.
If you're interested in interacting with your Pantheon sites directly from the command line, you can use some of the handy Drush commands that come packaged with Kalastack.