Have an idea of sites you want to visit and things you want to do during your trip. Do some research on travel blogs and communities. You should ask friends and family who have traveled before about places they enjoyed the most. Read through site-specific guide books like Lonely Planet, Let's Go, Rough Guide, Rick Steves, or Frommers. You might be interested in the following sites:
Book all travel far in advance. However, do not book anything until after the first week of classes. You may find there are NYU-sponsored trips already in place.
"I traveled to Croatia and Bosnia and visited Vienna on myway back to Prague. I highly recommend both Sarajevo and Dubrovnik, although Croatia and Bosnia may seem out of your comfort zone (they were certainly out of mine) Dubrovnik is beautiful and Sarajevo was the most diverse, vibrant, energetic and welcoming places I visited! Just go!!"
-Nora, NYU Prague student