This study proposes collaborative learning by which anyone can get skills without supervisors’ instructions. Generally, novices acquire them by being coached. Collaborative learning is defined as a method for studying and solving problems together in a group. In this study, subjects were instructed to get skills as collaborative learning for novices. The mastery process of their skills through the collaborative learning was analyzed by focusing on their speech communication and notes. And, the tacit knowledge to get skills and the process to keep it in mind were formulized from a cognitive point of view. The finding was suggested that a collaborative learning helped novices improve skills and share them, but novices could not figure out whether the outcomes were right or not. Furthermore, it was showed importance of getting skills: clues to know if skills are to decline or not, and ability to adjust opinions by collaborative learning.