Books differ in terms of what kind of emotions they evoke. This study investigated how different emotional features of books are related to university students’ selection/completion of the books, their perceived appreciation of the books, the number of words, and the emotional complexity/granularity of the books. Sixteen different types of basic and epistemic emotions were selected for categorization: happy, sad, fearful, disgusted, angry, surprised, curious, confused, anxious, excited, frustrated, bored, enjoying, relaxing, moved, and nonemotional. More than 200 students were familiarized with tagging ER materials with emotional labels, resulting in emotional profiles of books rated subjectively by students in an incremental manner. As a result, more than 2500 records were accumulated. The results of analyses are reported, such as that positive epistemic emotions are the best predictors of successful book completion as well as the elements of complex/granular emotionality. The rationale and pedagogical implications are discussed and exemplified.