Raspberry Pi Zero W is a small device that can be connected to either an external monitor or TV and of course, to the internet. The operating system varies, as there are many distributions on the official page and almost every distribution is based on Linux systems:

With Raspberry Pi Zero W, you have the ability to do almost everything from automation to gaming! It is a small computer that allows you to easily program with the help of GPIO pins and some other components such as a camera. Its possibilities are endless! In the next chapter, you will go through some awesome projects with this new board. Since almost all input and output on the Raspberry Pi Zero W board goes through GPIO pins, it is important to keep in mind a pinout diagram. The following is a pinout diagram of the Raspberry Pi Zero W board, which can be handy when soldering buttons or other types of sensors onto your Raspberry Pi board: