Nice to meet you. I own a 2016 Fiat 500s in Japan. I like to do my own repairs, so I'd like to learn here. I'm currently looking for the repair and parts manual for the 0.9LTwinair.
For the parts, check the ePER on the bottom of the forum banner. Search window is top left of the screen. It might not recognise the VIN (the car being a little bit to new), but the 2012+ model should be mechanically identical to the 2016 one, despite the facelifting made in 2015. However you would need to check on your own.
For the workshop manuals, check the download section of the forum.