Frequently Asked QuestionsAnswer all of your questionsPurchases & RefundsHow do I get a refund? Please see the Refunds Section in our Terms and Conditions document. Which discounts are available? Please see the Discounts Section in our Terms and Conditions document. CoursesWhich course(s) should I enroll? Please see the Math and Computer Science curriculum pages to determine your level and the best course for you. Couldn't find the answer? Please contact us.