Purchase Access Online Purchase access to your course materials online. MindTap Grace PeriodStart using MindTap without payment during the grace period, which starts when the course is available and lasts up to 14 days depending on the length of the course. Purchase Cengage UnlimitedGet access to your course materials, eBooks, and study tools with Cengage Unlimited or Cengage Unlimited eTextbooks. Purchase Course MaterialsPurchase access to your course materials individually. Print RentalsRent a printed version of your textbook. Enter Your Access Code or Course KeyEnter your course key or access code to gain access to your online course materials. View Your OrdersView all current and past orders that you have placed with Cengage. Purchasing ProblemsThere are some common problems you might run into while purchasing access. RefundsThe return policy depends on the type of materials purchased. Retake a Course for FreeIf you need to retake a Cengage course, you may be able to do so for free. Contact support to see if you are eligible. More information Purchase Cengage Unlimited MindTap Grace Period Refunds Use Cengage Unlimited Outside the US What's Included in Cengage Unlimited?