1. A smart learning system comprising: a first device that generates a device social relation based on a social relationship of users using a plurality of devices including the first device, and shares learning content with the plurality of devices; and at least one second device that executes an event related to the learning content by acquiring the shared learning content based on being included in the device social relation, wherein the smart learning system includes a remote management server that shares information, including the shared learning content, transmitted from the first device to the second device; wherein at least one of the first device and the second device includes a sensor for detecting motion, and wherein the at least one second device is included in the device social relation based on the first device and the second device being within a sensing range of the sensor relative to each other, and the sensor detecting a predetermined motion of the other of the first device and the second device.