The TEA5767 is a full FM broadcast receiver on a chip. So yeah, it’s really just how to wire up that chip, connect it to an audio amplifier (LM4811), etc. If you want to learn how radios work, I’d recommend many of the learning materials out there for amateur radio.
To be fair, I'm not sure if you can demodulate a 100MHz FM signal digitally. DSP at this frequency on an Arduino maybe be infeasible (you need a phase locked loop). I suppose if you used a bandpass + low pass filter you can pull it off but that will be a lot more work still.
