So while at Tech Ed last week I was asked questions on 'How MSBuild works and how can I extend it?

Well I would like to say that I can tell you everything about MSBuild but I cannot, I would like to say that I found this information first but I cannot.  What I can do for you, if you find this post before you find the other information on MSBuild is I will direct you to the blog of the MSBuild folks where they have provided a wealth of informative post to get you started.

• Series of How To: Post by the MSBuild Team Blog
• MSBuild Wiki
• MSBuild Forum
• MSBuild Object Model Reference
• MSDN MSBuild Documentation
• MSDN MSBuild Reference

That should be enough information to get started out with MSBuild.

Enjoy