With the Raspberry Pi built it is time to install the operating system.
The SD Card which arrives in the starter kit from Canakit is already loaded with NOOBS, which is an easy operating system installer which contains Raspbian and LibreELEC; it also provides a selection of alternative operating systems which are then downloaded from the internet and installed.
As I will be using the Raspberry Pi as a Pi-Hole, I will be using Raspbian Lite.
Start the Raspberry Pi and wait for NOOBS to start. Scroll down and mark the box next to Raspbian Lite and then click the Install button on the toolbar:
Click Yes to confirm that the selected OS will overwrite existing data on the SD card:
The installation will take a few minutes; in the meantime you get to look at a large raspberry and other screens:
Once installation is finished, click OK on the confirmation dialog: