How to open a bank account? A phone account? Wi-fi?
Banking
To open a bank account, you need a passport and a proof of address (justificatif de domicile) which can be a rental agreement (or a written certificate of accommodation) and/or the latest electric bill.
Always check with your student association for possible further instructions and verify with your bank the exact documents they require.
Phone
Many phone operators have special deals for students, so see if there are specific discounts. You can also check with your student association if they provide further information on phone operators.
Internet
Similar conditions apply to Internet as to phone accounts. You may find package deals combining the two. Do look for specific discounts and see if your student association has more information on the best deals in your town.