Unlike the Raspberry Pi, the Raspberry Pi Pico described in this manual is not a PC, but is treated like an Arduino or MicroBit microcontroller: you write the programme on your PC and write the programme from your PC to the microcontroller. Writing can be done via USB, so it is easy to operate. The Raspberry Pi Pico W is also Wifi enabled. This allows you to study the IoT. It is also relatively cheap compared to other Raspberry Pi's, around $1000, and if it breaks, it will be less of a shock. This book explains the Raspberry Pi Pico and the C language by creating a game in C for those who are new to the Raspberry Pi Pico. Use this book as a starting point to learn more about Raspberry Pi Pico and the C language.