I found a link on C# Corner, and it may be in C#, but the fundamentals are the same.

http://www.c-sharpcorner.com/1/comnet.asp

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All that glitters has a high refractive index.
www.mendhak.com
 Hi All,
     We have a visual basic 6.0 application and we want to migrate it to 3
 tier in .net .  Could any one suggest me some good links for n-tier
 development introduction.  I am not new to programming, but new to n-tier
 development.  

 Thanks

I've been looking for it for a long time; the best I found is this, complete
with sample apps and ppt presentations:
http://aspsmith.com/DesktopDefault.aspx?tabindex=3&tabid=9. The links are of
the bottom of the page.