For more information about Common Language Runtime internals and high- performance coding, you can always consult the MSDN .NET Developer's center. This website is constantly being updated with new and relevant articles to .NET developers about performance, security, data access, and much more. The developer's center can be reached at msdn.microsoft.com/netframework. Also keep an eye on the .NET newsgroups (also hosted by Microsoft) and .NET websites such as www.gotdotnet.com and www.asp.net.
A book that takes you deep inside the Common Language Runtime with far more detail than this chapter is Essential .NET, Volume I: The Common Language Runtime by Don Box (Addison-Wesley 0201734117).