Thank you very much! To be honest, I don't like to read on the screen. And I think for beginners it's easier to read a book, than searching through all the stuff that is written in a forum. I already looked on amazon, but there are so many books, that I don't know which one I could order. And another reason is, I would like to sell some books to my customers. But that's difficult, because most of them don't speak English very well. Bye, Sandy