Best way to travel in Europe would most probably by rail. Europe has an massive rail network that cover the entire Europe and rail passes are offered to student at a discount.

Visit the railconnection website, for rail tickets offered to youth at discount price. >> more links

Mode of transport while travelling in North America and everywhere else would probably be a combination all mode of transportation.

To get around the North America by rail, visit the Amtrak website for more infomation. >> more links