I'm Andy Warren, currently a SQL Server trainer with End to End Training. Over the past few years I've been a developer, DBA, and IT Director. I was one of the original founders of SQLServerCentral.com and helped grow that community from zero to about 300k members before deciding to move on to other ventures.
Article is at http://www.sqlservercentral.com/columnists/awarren/3135.asp. I'll have quite a few more on this subject over the next few months. As I mentioned in my recent article on Professional Development Plans partitions have been my recent focus and there is no better way to see if I have absorbed most of it than by explaining it to my peers at SSC.