To provide a medium for teaching rules, which stores training data in a CD-ROM, and a business system for learning, which uses the medium.

The interval of rhythms and tempos in training can be obtained by the business system for learning, which gives a peculiar identification number to the CD-ROM, collects information from a user to the WWW server of a management center, sends collected information to the terminal of a company requesting specified information and by which the user can receive a prize and incentive from the management center, and by the medium for teaching rules, which is used for the system.