Hello and welcome to this Guidebook. We wrote all of this with the prospect to help new PhDs especially in Tübingen, but many of the articles are also valid for other places and everybody who reads this. The idea of the guidebook is about giving people new to Tübingen answers to questions like ‘Where to get a bike (fixed)?’ or ‘Where to go for physical activities?’. All chapters have sustainability in mind and shall show an easy and enjoyable way of living. Thereby, an increasing focus is on mental health – an increasingly important topic, especially for PhDs.