Answer the question you selected for profile question 3 here (300 words):
Notecards are your friend! I know in this age of modern technology there are lots of other ways to take notes, learn vocabulary, and quiz yourself, but notecards work even where there is no internet. They are small, easy to carry along, and some of mine from my undergrad days bring back memories of classes I enjoyed and classmates I enjoyed working with.
Beyond that, just stay curious and be willing to explore. Staying fit is a good idea too; I have to do a lot of hiking around.