Although it’s still better to view the free videos on the official website, you can now also view each of the complete courses as YouTube playlists. YouTube playlists group all of the video lessons together, making them much easier to find on YouTube.
Free ASP.NET, C# and Visual Studio Video Course:
Official Site YouTube Playlist
Free Excel 2010 Video Course: Official Site YouTube Playlist
Free Excel 2007 Video Course: Official Site YouTube Playlist