Looking back on my time in Berlin leaves me with such longing to go back and do everything I didn't have a chance to. We accomplished so much while we were there yet for every one activity we did I now have 3 more things I want to go back and do! Don't spend a day at home being bored watching Netflix. Get out there and buy a bike and go drink a beer in the park and live like a Berliner.
There's so much opportunity in that city it's almost mind boggling. Make a list of things to do at the start of your trip and knock it off as quick as possible and then make another :) Go out partying with your classmates, you'll be amazed at how much you can learn in one evening and the places you'll go!
Plan half your side trips in advance but leave room for trips with your new found friends. Plane and train are a great way to travel but do at least one road trip In a rental car! Such a great way to see the countryside. Don't forget to pay for all tickets and rentals with a travel credit card because of the free insurance it will give you! Embrace everything with as open as arms as possible.
Read Andrew's full report (.pdf) on his semester abroad at SRH Berlin