Tutorial about Ms VB.net

• Ms Visual Basic .NET tutorial, parte 5: variables
  http://www.youtube.com/watch?v=DoXqV9ypaX8
• Ms Visual Basic .NET tutorial, parte 6: concatenación
  http://www.youtube.com/watch?v=YEfRxTVdPQE
• Ms Visual Basic .NET tutorial, parte 7: try - catch
  http://www.youtube.com/watch?v=p7DzpiYQxSY