If you are studying for IT certification exams, this is website offers a myriad of discount coupons:
http://www.itexamvouchers.com/
ITExamVouchers offers discount certification exam test vouchers for CompTIA (A+, Network+, Security+), Microsoft (MCSE), Cisco (CCNA), and Microsoft Office Specialist certification tests.
These coupons can help with the cost of the exams in case you cannot get reimbursement from your employer.