To provide an information processing apparatus for allowing a learner to enjoy viewing and listening of the content and to perform linguistic learning, and to check the effect of learning. A Dictionary DB 101 associates a vocabulary with a difficulty level determined for each vocabulary, and stores the vocabulary and the difficulty level, the vocabulary including a word, an idiom, or a phrase consisting of two or more words in a language to learn. A registration unit 102 registers a degree of learning of the language to learn of a learner as a learning level. A calculating unit 104 calculates the number of the vocabularies to learn used in the content as a frequency in use. A specifying unit 106 specifies, according to the calculated frequency in use and the registered learning level, and among the vocabularies of the language to learn used in the content, a vocabulary which is an object to learn as a vocabulary to learn. A main control unit 113 causes an input operation received by an input unit 111 during the output of the content to be registered as an input operation in response to the output of the vocabulary to learn.