. Xu?ng ti?n tr??c khi tr?n b?t ??u hay tham gia c??c trong khi tr?n thi ??u di?n ra.Once you subscribe to the training course that is a component of a Specialization, you’re automatically subscribed to the entire Specialization. Pay a visit to your learner dashboard to track your progress.B??c four: Sau khi ?i?n ??y ???thông tin, ng??i ch?i ti?