Hi Luigi,
I'm glad you're finding the book useful. If you have any questions or comments, please post them here and I'll try to help.
Also post a review when you have the time! Reviews are really important for a book's sales.
As for more advanced books, I donât have any planned now but you never know.
Also my WPF book
WPF Programmer's Reference and database book
Beginning Database Design Solutions are language-neutral.
The WPF book focuses on WPF so it uses XAML as much as possible, and uses C# where it needs code behind the interface.
The database book is about database design and modeling and doesn't really explain how to build a database application in any language.