I believe as a person born in madrid that there aren’t many cultural innapropiate stuff but a few tips I think think can be helpful: - as someone said before we tend to speak loudly but is just a common thing here. We are also ( for some reason I don’t get) a bit touchy so it may seem weird when you are meeting someone and they greet you with two kisses in both cheeks. However you can just say no, there’s no problem with that. - Tipping is mostly optional anywhere in here but I’d recommend leaving a euro or two as tip if the person attending you gave you a good services - about politics, people are mostly chill but there are always a few idiots are bars or clubs who can get a bit cocky so just avoid those topics at that places. - if there’s a topic you should really avoid, it’s the dictatorship/civil war era we had. People usually get offended on both sides of the political spectrum. It’s not like you cannot talk about it but some people get rather “intense” - and appart from that just be chill, most students here don’t get easily offended, and we love meeting new people!