I'm a large supporter of living in the moment while abroad. However, it's important not to completely neglect getting things back at your home university! Some quick tips:
Class Registration: Keep in touch with your advisers to make sure you know when to register and which classes you need.
Housing: Get in touch with friends and check dates back home so you don't get stuck living in a box upon your return.
Sharing Abroad Experiences: People and organizations at your university may reach out to you asking you to share your abroad experiences. Welcome these opportunities to share your adventures!
All in all, emails are your best friend when communicating with your university and other organizations back home!