I have worked with, and taught Scratch to students. In addition I have worked with and used Excel on a near daily basis. I am fully capable of writing a book on either of the two topics.
Hello,
Your service is our priority, we'll focus on it and do the best for your satisfaction. We'll apply our experience and take care for everything we do. Don't hesitate to contact us to be your co-worker.
Best regards.
Lala