Intermediate kOS Tutorial

No pictures, just text and code. I hope it's not too dry. I haven't tested the code yet either, but it's essentially complete.
It's probably a good idea not to jump into 1st person singular like this when the document hasn't been introduced as to who wrote it.  I don't want the reader to think "Who is the 'I' here?  Is it Steve, the guy who wrote that other document?"