Ahodges/documentation/doc608

@gwprice , @jimabramson , @marcotuts , @lou-wang , @explorerleslie , @WatsonEmily  please check accuracy and completeness (note the files have different audiences, staff vs. students).
@mhoeber @srpearce please copy edit.
@lamagnifica   OK that sounds good - I was just thinking there a product name for it and it was something we wanted to familiarize users with.  Otherwise it is clear to me what they should be looking at :+1: