Students coming from very warm climates are often unequipped for winter weather. Here are some things you can do:
OUT AND ABOUT
1) Keep both ends warm. Socks and a hat will help retain body heat. A scarf and gloves are essentials when it's very cold.
2) Don't wear all your outside gear (coat, hat, etc.) indoors. Save them for when you go outside.
3) Long underwear (like the Cuddl Duds brand) is rated warm, warmer, warmest. It's inexpensive and does an amazing job of keeping you warm, even in the cold outside.
AT HOME
1) Bedsheets come in three types: regular, flannel, and fleece. Regular sheets can be used all year, but flannel are warmer. Fleece sheets are the warmest of all.
2) A heated blanket or throw is usually under $50. These are inexpensive to use (versus turning on the room heat). Put one over the top sheet and under the blankets, not on top of the bed.