It came earlier than expected, everything was as in description.
Great book, and my son (10) starts using python to draw images with turtle and then with Minecraft PI (that is installed by default with Noob) using this site: https://www.stuffaboutcode.com/
I just installed some packages (with apt-get because Noob is Debian based) and helped him to start. Well, mostly he did everything, including wiring and so on. So my help was really very limited.
My son loves it and I'm happy he can play and learn things in the same time. Unfortunately, it's almost impossible to do with any modern OS because even simple systems are too powerful and you need Internet to do most things. It means kids are using online games (even with scratch you can only play games that are created by someone else) instead of learning things. So I think Raspberry PI is a great solution for education computer for kids.