I recently passed the AZ-303 exam. Below are some of the resources I used to prepare for the exam. In addition to the links below, I also used Alan Rodrigues’ course on Udemy. https://www.udemy.com/course/az-102-azure-administrator-certification-transition/ The Udemy course and Microsoft Docs are enough to pass the exam. The course has some good practice exams and labs that align well with what you’ll see on the real exam regarding difficulty. I was scoring in the high 90’s on the Udemy exams.