Pick up an ISIC card before you travel too, it will save you moolah almost everywhere.
Visit your Doctor or check at a clinic for any travel vaccinations that may be required for the country you are visiting. Some places require a certificate for proof as well.
Check out Statravel's great value on BLUE tickets! They are changeable for 25.00! and if it all turns to custard before you go they can be refunded too!