Getting Started with the Raspberry Pi Zero 2 W
M-Short, 
El Duderino 
Choosing and installing an OS
Before powering on your Pi Zero 2 W you'll need to flash an image of the Raspberry Pi OS (or if you prefer, a third party operating system that work with Raspberry Pi) to the microSD card included with the Basic Kit. The Raspberry Pi Foundation created a great tool called the Raspberry Pi Imager that makes downloading and flashing an OS image a microSD card simple. This section briefly goes over how use that tool to upload an image of the Raspberry Pi OS on your microSD card.
Raspberry Pi Imager
The Raspberry Pi Imager tool makes selecting and writing an image of a Raspberry Pi-compatible operating system to a microSD card way easier than it was in the past. All you need to do is select the OS and storage device and the tool takes care of the rest. Download the tool from Raspberry Pi's software page here:
Once the tool is downloaded and installed on your computer, follow the steps below to complete the image installation:
- Insert the microSD card and SD adapter into the appropriate port on your computer.
- Open the Raspberry Pi Imager.
- Click the Choose OS button to select your preferred Operating System (this tutorial will use the default Raspberry Pi OS).
- Click the Choose Storage button and select your microSD's drive location.
- Click Write.
Writing the OS to the microSD card can take a few minutes depending on which version was selected and the speed of the port/microSD card. Once the write is finished, the tool should automatically perform the software ejection for the microSD card so you can remove it once the process completes.