I learnt event-driven programming, OOP and GUI toolkits architecture studying a "borrowed" Pascal Turbo Vision manual that nobody in my high school was using.

I learnt event-driven programming, OOP and GUI toolkits architecture studying a "borrowed" Pascal Turbo Vision manual that nobody in my high school was using. Later on I wanted to mess around with VGA mode X and direct memory access, but there was no internet at the time, and I had no books. So I just tried and tried, until it eventually worked. In a way, being limited to just a few sources of high quality information forced the young me to learn how to study them in deep. This was helpful because it gave the foundations and the method, and made it possible to explore unknown fields without guidance. Now that I wrote it down, I realized that this journey was so satisfying that it continues, in other forms, to the present day. I would not be surprised if the OP was moved by a similar desire to offer this kind of experience to kids. If so, I definitely can understand why.