I worked abroad in Japan for three months and I knew a couple of foreign students at my university and I think the most important thing, which will probably happen on its own anyway, is to make friends. If you befriend locals, you will experience the trip probably better than you could ever on your own. After a couple of weeks in Japan I knew all my colleagues pretty well, and they were so nice to me! They took me out to various places to eat, on the weekends they asked if I'm busy and we planned trips (even a little bit further away). And I got the same vibe from the foreign students: the time I saw them having the most fun on pictures was always when they were with others, instead of sitting in their apartment and waiting for the time to be over. See this as a maybe once in a lifetime chance! When you're back and you settled with a girlfriend, maybe a house and later family, something like this will be almost impossible. So in short: make the most out of it and use every day, in best case with new made friends who either share your experience of locals!
Can't stress this enough, make friends. Not lovers, friends. You might seem lonely sometimes and wish to be back with friends and family from home. But make friends, be open to things that you wouldn't have done back home. Good luck :) P.S: stay away from the snakes, crocodiles and spiders.
Oh yeah, the "do things that you wouldn't do at home" is also a big thing, in my opinion. Even if it's sad, you will only keep in touch with little people probably afterwards, but you can use this to do all the things you always wanted to do but for whatever reason you did not. Go out somewhere new without a plan of anything, without preparation. Get lost (literally). Over the Golden Week in Japan a buddy of mine visited and we did so many stupid things. Literally got lost in the city at 2 am and walked to our apartment for 3 hours, but we met so many people and it was such an unforgettable experience. We saw things which we never would've seen otherwise. I did go to clubs (which I normally never do) and a lot of other things. Try things you'd never thought you'd like. I think this is one of the little occassions where YOLO actually fits :D
This is important for everyone, everywhere, especially during college. I would add to focus on making friends but love your lovers, too. Don't feel guilty for one or two or five of those during college. :)Not lovers. Friends.