Whenever I need some help with Visual Basic.net, this is the first source that I use. Sometimes it is better than the on-line help. I would supplement this book with the "Visual Basic.Net: The Complete Reference" book. I would highly recommend that both books be added to your Visual Basic.Net reference library. Although not as fast as the on-line help, the book provides better answers to your Visual Basic.Net questions. The only error that I found is ADO.Net becomes ADO.Next in the chapter on ADO.Net. Must have been the publisher.