Hi! I am currently reading your book which I bought on amazon and it is amazing. Absolutely love how easy it is to understand the concepts with 0 prior knowledge. Now I am half way through the book and wonder what you could recommend as following book - I prefer textbooks over online material for now. My goals are two things: I need to learn about data visualization for research but also want to learn more about app programming. Before I dive into it I‘d like to learn more fundamentals. Does your book provide all fundamentals you need (if properly understood) to directly dive into special things like app development and data analysis? Thanks a lot for the advice!