.NET
http://csharp.2000things.com/index/
http://wpftutorial.net/HowToCreateACustomControl.html
Learning Habit:
http://www.dirkstrauss.com/interviews/ten-minutes-with-sean-sexton#.U3Qb5elZq70
Algorithm:
http://www.palantir.com/2011/09/how-to-rock-an-algorithms-interview/