I bought on to play around with a while back. But found the arduino board more to my liking since I didn’t need the power of the Pi.
For non geeks the easiest way to explain it is to imagine a table computer without a screen, battery, or any buttons. It is a super small form factor Linux based computer.
A really great project is to set up a Pi with a Pi video camera and put the lot into one of those dummy CCTV camera housings. Now you have a video monitoring and capture system for under $150.