Patterns for Parallel Programming (free downloadable pdf book by Microsoft) Understanding and Applying Parallel Patterns with the .NET Framework 4 - VB and C#

Here you can find a free downloadable PDF boook (118 pages) from microsoft, that talk about common pattern for parallel programming in .Net 4.0, VB and C#

Download link: http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=19222