In recent years, digital learning materials have been incorporated into schools by the spread of Information and Communication Technology (ICT). In this paper, we propose learning methods to develop the expressive power, decision making and thinking skills of students using digital materials. Additionally, we develop the following features: a method that can show the data created in ePub as the digital learning materials, a feature that can search the Internet directly by linking with an Internet browser, and a feature that saves the meta-data for the learner using e-learning to reuse the data that was developed for smartphone users.