The Scrum Master Certified is not any entry-level examination. I would take the free Scrum Fundamentals Certified exam first. Scrumstudy.com has free exam prep webinars covering the exam. You will also get access to a free online video course. Here is my Scrum Fundamentals Certified write-up. Finally, download and read the Scrum Body of Knowledge. Good luck! https://carlarjenkins.medium.com/passed-my-scrum-fundamentals-certified-f1dd72799a2c