Fernando S. and I (David S.) have put together two new Help Articles that describe the IDL Workbench.
The first article is called "IDL Workbench Guide" and it's based the Workbench chapter of Mark Piper's "Introduction to IDL" course manual. The Help Article also expands on it by adding some new sections and external links, including our YouTube videos. Please, take a look at it here:
http://www.exelisvis.com/.../ArticleId/5300.aspx
The second article is a reference guide called "IDL 8 Workbench Reference". This article provides a description of the menus and views that form the Workbench that users can reference. Please take a look at it here:
http://www.exelisvis.com/.../ArticleId/5295.aspx
We hope you will find these articles helpful!