If you develop your own API libraries on top of the .NET Framework, or think that sounds like something you want to do, this series of web casts may be for you. The whole series runs once a week through April and covers a two day internal training class at Microsoft. The first part, an introduction with video of Brad Abrams speaking along with his slides, is posted. A follow up chat is scheduled for Jan 19th. The quality of the presentation and the presentation format is outstanding.

Check it out. The intro that is posted sets the stage for what is to come. Looks like it will be a great series to watch.

MSDN .NET Framework Developer Center: Designing .NET Class Libraries