However often as you feel like. Being the homesick person that I am, I usually visit home one weekend a month (or more if I'm feeling down). I skype with my family and talk on the phone and text occasionally in between. Some people are not like me at all, and only go home for Thanksgiving. Some people live at home and commute to Berkeley! Everyone is different in this respect, and although it may not be "cool" to miss home, do what makes you comfortable!
We want you to have the best college experience, so Plus-U moved in with Unigo. You're now part of the most extensive college network on the planet, with incredible resources to help you at every step of your journey.