Can You Get a Scrum Master Certification for Free?
Too Long; Didn't ReadScrum is a “lightweight framework that helps people, teams and organizations generate value through adaptive solutions for complex problems. The Scrum Master is the one accountable for establishing it in the team and the organization. There is a lot to Scrum that you can learn and apply without a certification. A good place to study is [Scrum.org] It offers lots of free high-quality material and webinars to refresh what you know. If you can't do it at work right now, you could try applying it to your personal life.