I am currently a CEO of a small E-learning company in India. We are very much active in making training videos , writing books and corporate trainings. You can visit about my organization at www.questpond.com and also enjoy the videos uploaded for Design patter, FPA , UML , Project and lot. I am also actively involved in RFC which is a financial open source madei in C#. It has modules like accounting , invoicing , purchase , stocks etc.