A new phone line is now open for information on World Youth Day 2013 in Brazil. The phone line is open from 8:00 a.m. to 8:00 p.m., but is not toll-free so you will have to pay international phone charges. Of course if you are attending WYD 2013 and are in Brazil it will not be an international call. The number to call is (country code 55) + (21) 2122-8050. Those answering the phones will be able to communicate in Portuguese (the language spoken in Brazil), English and Spanish.
You can also email them at: firstname.lastname@example.org. Emails are answered in Portuguese, English, Spanish, Italian, French, German and Polish. Please note that many of the answers you are looking for are on the official World Youth Day website, so they ask that you go there first.