One of the most helpful offices in all of PL, make this your first port of call on arrival. Here (and on their multilingual website) you'll find a wide range of free information on Tarnów and the surrounding region, free internet (browse away), bicycle rental, luggage lockers, souvenirs, and there's even accommodation available upstairs. The friendly, knowledgeable and enthusiastic English-speaking staff, can give you a better idea of what all that is, plus whatever information or advice you can't find here, so don't be shy. There's a reason they've been awarded as the best TI office in Poland numerous times, and as recently as 2019.