well, depends what you need the squat for. if youre looking for a place to sleep i wouldnt reccomend just visiting random squats and asking for a place to stay as most people dont really like that. you should go to a squatbar, have a couple beers, socialize a little and youll have a place to sleep in no time. Unless youre an asshole.
if youre looking for a place to live i reccomend you visit a KSU, which is a group of experienced squatters who know the local laws inside out, and who are there to help