This essay has been conducted in order to increase a greater understanding and knowledge of young adults that interact and hang out on YouTube through the community Booktube. Booktube is a community where a broad mix of people talks about and share their greatest interests; books and reading. The study of this essay was conducted using semi-structured interviews with seven informants via Skype. The interview data was collected to answer questions about why these young adults activate themselves on Booktube, and also to understand how the Booktube community contributes to young adults identity development, both self-identity and social identity. Former studies and theories discussed in this essay to analyze and discuss the informants’ interview replies include: theories of identity development, social identity theory (SIT), social media and reading as an act contributing to a person’s identity development.