Need advice-travelling from Paris

Which country should I go first from Paris? We plan to visit Amtersdam, Germany and Switerland.
please whcich is the cheapest way to reaching there by bus or train.

After my last autumn trip I can definitely say that from Paris you should go to.... France There are so many perfect places worth to bee seen. I've fallen in love with France. Just 100-200 km around Paris to various destinations and you can find yourself in:
1) Normandie. Look in internet for Etretat - I never forget the white rocks which I've seen there.
2) Le Mont Saint Michel - the pearl of architecture and one of the places which is always seen on the advertising photos. Perfect
3) Bretagne. My favorite province. Small and very interesting city Sen Malo. Worth to spend a lazy romantic day at the sea.
4) Loire. The castles which you can find there are the most beautiful in Europe. I've been to Chambord, Cheverny, Blois, Chenonceau, Amboise... and there are lots to continue my list.
Paris is a very beautiful city and I love it. But do not leave France after you visit Paris. Please not so fast