Originally Posted by
farci
Whoah! I think you might have mixed up your
train and
plane 
Your first task should be to consult the European rail timetables
here and work out an itinerary which will answer many of your own questions.
As to best tickets, there are plenty experts on this forum who can advise you after your schedule is finalised!
Yes, I agree! Maybe the company didn't give me enough time and dates when to leave exactly, so I have limit time for organizing things. I will work on that properly. Thank you