I'd say check out this part of the forum, just for your model of 500. All sorts of issues, knowledge and goings on that will all be relevant to your car. Your 1.2 engine is a nearly 30 year old design, known for being fairly bullet proof with minimal servicing or fuss - it's one worth maintaining, if you look after it, it will look after you.
The internet's #1 online community and oracle for talk on all things FIAT 500 (2007+). Ask questions in the forum, fix common issues using our helpful guides, upload your photos to the gallery or buy and sell with the online classifieds.
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Which year, colour and spec did you go for? High mileage or low?