The first thing I do if I'm coaching/mentoring a C#/.NET novice is to get them to follow the C# Coding Conventions [1] with Allman style indentation [2] and the Design Guidelines for Developing Class Libraries [3].
One other thing I would do is liberally sprinkle the tutorial with links to relevant further reading in the MSDN docs. A lot of new devs are overwhelmed by the MSDN library and often have no idea where to begin looking for reference material. Giving them good entry points so they can familiarise themselves with the official docs would be a beneficial addition.
[1] http://msdn.microsoft.com/en-us/library/ms229042(v=vs.100).a...
[2] http://en.wikipedia.org/wiki/Indent_style#Allman_style
[3] http://msdn.microsoft.com/en-us/library/vstudio/ff926074.asp...