Stay in hostels to save money. Hostelworld.com! After France, do Bruges, Gent, Antwerp in Belgium, then Amsterdam of course. Then there's Berlin. Prague, Budapest, then Vienna, Munich. I mean I could go on and on. There are just toooo many things to see in Europe. Book flights via Ryanair now! They are dirt cheap when you book early... and i mean cheap! Trains in countries like Germany can easily be more expensive than flying. Book early!