The first thing you need to do is install a Raspberry Pi with an SD card slot.
This is to ensure that the Pi is able to write data to the SD card, so that you can access the Pi’s GPIO pins and display it.
You will also need to set up a wireless network adapter for the Pi.
These instructions assume you have installed the Raspberry Pi firmware package, and you have the latest version of the Raspberry Pis kernel installed.
You can also download a Raspbian image from the RaspberryPi.org site and flash it onto your RaspberryPi with a USB flash drive.