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.
Most courses also include one or more topics for course-wide discussions, such as "Frequently Asked Questions" and "Troubleshooting".