Federal Student Aid has provided a short video with information about what to expect when entering repayment.
To view the total amount of federal loans that you have borrowed, you can go to www.nslds.ed.gov and log in to view the breakdown of subsidized, unsubsidized, and total loan amounts borrowed, as well as the Loan Servicer assigned. You will want to contact the servicer listed, to discuss the various repayment options offered, and select the one that is best for you.
Read more information here on getting out of loan default.
Deferment & Forbearance
This document provides information on deferment and forbearance. You can review this and contact your loan servicer to discuss if you are eligible for either if you are having difficulties making payments.