The U.S. State Department has extensive information about international travel and living abroad. One section of their website is specifically for students:
Other State Department sites related to international travel that may be of interest:
Student typically stay very "connected" while they are abroad. There are three primary methods for using a mobile device while abroad: signing up for an international plan with a major U.S. carrier, purchasing a SIM card, or using Wi-Fi to communicate through mobile applications such as Skype, FaceTime or Viber. Wireless internet access is available for student use at all extended campuses.