This all depends on your spending habits. If you plan on buying lots of souvenirs, then remember you will have to ship them home. Take into consideration as well if you plan to backpack afterwards. The amount needed can range from 800 to 2000 dollars. Healthcare is readily available in mostly all of Europe and generally an English speaking person can be found here.
Insurance is covered in the cost of the trip.
International Student Identity Cards also provide some insurance. The pharmacies are more helpful there than here in the States and the pharmacist can direct you to which medicine is needed. In this age of technology, the Internet is not very hard to find throughout Europe. Prices will vary to use the machines but for the most part, it is not too outrageous. It is best to set up an e-mail account through the Internet, such as Hotmail or Yahoo.