Technological changes have brought great impacts for the development of teaching and learning process. Moreover, students as generation Z are usually keen on experiencing new methods to learn. The objectives of the study are to investigate activities preferred by students in learning English autonomously and to analyze why they choose them. Mixed methods were applied to get deeper and broader analysis on autonomous learning behavior among the participants. Descriptive quantitative analysis and phenomenology approaches were used in the study. The result showed that watching videos became the most favorable activity to learn English autonomously because the media offered some benefits in terms of vocabulary enrichment, listening enhancement, and pronunciation practice. However, teachers' guidance to choose what videos to watch were admittedly required.