The goal of the WordBook project is to implement an electronic studying system for the verbal section of the Graduate Record Examination (GRE). The system provides a comprehensive list of vocabulary words that are commonly on the exam. I conducted a survey and structure interviews to gain requirements and understand user requirements. I drew a story board and low-fidelity prototypes to convey my ideas to group members and users, so they did not misunderstand my interaction design and user interface of WordBook. My classmates and I did the heuristic evaluation of WordBook. We developed the high fidelity prototype by HTML5 according to the classmates' feedback.