Application forms about the program in Sweden (or in other countries) can be obtained from your National CIF Branch. The completed applications should be sent there as well. Get in contact with your national branch and get their deadline for application: How to apply.
If you live in a country without a National Branch you can download the application form and have to send it direct to CIF-Sweden, Deadline 1 December. Application form and address: How to apply
Check out the video with participants in CIF-Sweden exchange program 2011 and read reports from previous participant