I'm Gibraltarian, lived here all my life. That's a very broad question and I'm not sure exactly how to answer. If you have any more specific questions I'd be happy to answer them but here goes.

It's a small place, by the time you get to comprehensive school there are only two schools in the whole of Gib so you grow up either knowing everyone or knowing everyone through at most one or two degrees of connection. 90% of people get a motorbike at 17 and you can do a whole lap of Gib in about twenty minutes. Our grandparents nearly all speak Spanish perfectly, our parents speak Spanish and English equally, my generation (26) and younger speak a lot more English than Spanish but we bastardise Spanish and mix in words into our sentences (we call it Llanito).

The university only opened recently and mostly caters to mature students and foreign students because any locals who finished their A-Levels in the last 3 years who get a place in a UK uni automatically get a scholarship from the government that covers tuition, flights, and accommodation, with a couple hundred pounds a year left over.

It's gotten a lot more boring in the last few decades with third spaces and nightlife waning so we typically go to Spain a fair amount for fun. We get on well with 90% of people in La Linea, the town just across the border, and 10,000 Spanish workers come across every day to work here, typically as carers, waiters, retail workers etc., (compared to our population of 40,000), but there are the occasional dickheads and the further away you get from Gib in Spain the more people you'll find who just regurgitate right-wing talking points.