There are specific fares or schemes for students and young people in general, to help you get about more cheaply on public transport. Do you know what they are?
Rent is a significant part of your budget - so don't forget to apply for housing aid, whether this is paid by the CAF (Family Allowance Fund) or managed by the "Action Logement" association.
For only €10, this card gives you discounts in 37 European countries. Travel, cultural trips, sports activities, etc., with over 60,000 benefits a year!