ebook - n. a book that is read on a computer or other electronic device
discount - n. a price reduction
copyright - n. the legal right to be the only one to reproduce, publish, and sell a book, musical recording, etc., for a certain period of time
malware - n. software program designed to damage a computer system
infect - v. to cause (a computer or computer file) to stop working as it should
referral - n. the act of sending someone to another person or place
genre - n. a particular type or category of literature or art
eligible - adj. able to be chosen for something
audiobook - n. a recording of a reading of a book