I will be studying in Aix-en-Provence starting September 6th, but I will be visiting a friend in Bretagne from August 28th until September 2nd. From there I will travel to Aix. I don't plan to travel too much during my stay in Aix, but I anticipate a trip or two to Paris during the fall from Sep. 6 to Dec. 20, a week long trip to Geneva around October 31. Is there a student pass that I might purchase that would be ideal for the 7-9, one-way, train trips that I will be taking? Should I purchase the tickets as needed or all at once? Any thoughts would be gladly received. Thank you!