Study the climate and typical weather pattern for the region that you will be visiting. From this information, choose your wardrobe. Chose items that will accessorize with each other as your baggage will have a weight limit (typically under 50 lbs). Budget for buying a fair amount of clothing and shoes abroad to help fit into the local culture.
Contact the school you will be attending. While exchange programs arrange for basic enrollment, the extracurricular activities often aren't addressed. Find out the specific requirements of the school so you may participate in your favorite sports, musical groups, or other organizations without hassle. Some schools require letters from previous coaches, transcripts, and medical physicals before participation.
Set up communication channels for family and friends to be able to contact you. Choose a cellphone contract that includes service in the country you will be studying as well as the country you are currently in so that friends and family will be able to reach you. Include unlimited texting and data usage. Web access can take the place of travel guides and language translation books. In addition, set up a reliable method for family to get you money when unforeseen needs arise. Use social media to start meeting people at your future school while allowing contact from friends at your old school. Purchase prepaid postage to your new location for friends and family to easily send you letters.
In the event you stay with a host family, contact them immediately via email and start dialoging about interests and hopes from the experience. This will not only help in preparation but will also give you yet another chance to practice the language. Choose gifts for your hosting family that are indicative of your country. What is your country famous for? Try to learn some traditional recipes that you can teach your hosting family. Consider asking parents or other family members to sign the card or inscribe something on the gift.