Greg Crawford at Citizen Scientists League has written a three-part series on the Netduino. In Part 1 he describes the Netduino’s features and compares this board to the more familiar Arduino.
In Part 2, Greg details how to interface the Netduino with the SPI bus, and provides some C# code for this purpose.
Part 3 continues with a detailed description of using a MAX6675 breakout with the Netduino in a datalogging project coded in C#.
This series is comprehensive and makes interesting points for anyone considering working with a Netduino.