In this paper I discuss my doctoral research which aims to better understand collaborative computational thinking (CT). In order to be successful in the 21st century, skills such CT (understanding and applying computational concepts) are indispensable for people across all ages and disciplines. One can learn computational concepts by taking a traditional course offered in a school or by self-guided learning through an online platform. Whatever the form of learning, computational concepts can be difficult to fully comprehend for novices. Collaborative learning has been considered effective in reducing learner's anxiety and in helping struggling learners overcome common learning difficulties. The proposed dissertation study aims to investigate how collaboration impacts learning of CT across both classroom setting and in an online learning community. This paper briefly describes the motivation and outline of my proposed dissertation study, the overarching research questions, the data currently collected, and my data analysis methodologies.