A scrum master is a role within agile software development teams. They manage issues that come up within the scrum teams. In order to become a scrum master you will need to learn to understand agile software development. You may also be involved in sizing stories, and estimating the cost of projects. You will need to have a good understanding of project management, and be able to work with a product owner. Agile scrum certification training is a simple, but very effective way of managing agile software development, so if you understand the basics, you will be able to manage a scrum team with ease, and will become a valuable asset.
https://www.mindcypress.com/product/agile-scrum-master