If you are a Computer Science student, you are probably already a member of CSS - your member fee comes out of your tuition. This product is intended for students who are not members of CSS. People who are not members of CSS by default includes double majors, grad/PhD students, students who opted-out of CSS fees, etc.
The Computer Science Society encompasses all undergraduate students in Computer Science.
By joining the Computer Science Society you will have the opportunity to take advantage of the many resources we provide, such as our awesome monthly outings/events, our career workshops (resume workshops, tutorials on landing internships, etc.), CS Games, and many other things we may provide throughout the year.
Purchasing this membership will allow you to be a a valid member of CSS for 1 semester (the semester you purchase it in). If you have any questions about CSS membership, reach out to us at firstname.lastname@example.org and we'll be more than happy to help you!