The Raspberry Pi 400 Personal Computer Kit looks like it is what you want. https://www.raspberrypi.com/products/raspberry-pi-400/ https://www.raspberrypi.com/p

The Raspberry Pi 400 Personal Computer Kit looks like it is what you want. https://www.raspberrypi.com/products/raspberry-pi-400/ https://www.raspberrypi.com/products/raspberry-pi-400/ And most importantly, these seem available for purchase. Plus, there is a huge amount of stuff in the way of books and magazines that can be downloaded for free: https://magpi.raspberrypi.com/books https://magpi.raspberrypi.com/books https://magpi.raspberrypi.com/issues https://magpi.raspberrypi.com/issues as well as several other magazines and libraries from the same source