The free Eurail map has tons of useful information on the back side. This too is well worth reading, and it lists free transportation and discounts you will not find listed anywhere else, as well as pass-abuse penalties. Don’t ignore this information. The same map lists Eurail Aid offices next to the map itself. These offices can issue new maps or timetables and can deal with pass problems. InterRail passhoiders can use InterRail centers in London, Copenhagen, Oslo, and Trondheim, some of which even provide accommodations as well as food and somewhere to get cleaned up. Once in Europe, travelers without train passes who are under 26 can take advantage oflarge discounts on a certain type of rail ticket. Known as BIJ tickets, these are available from student and youth travel agencies and can save as much as a third on the price of a regular rail ticket. They’re valid for two months and you can stop off wherever you like as long as you keep going in one direction - no backtracking is allowed. These tickets are useful if you want to make one long specific journey and don’t need a rail pass.