If you want to become an SAP professional then it's crucial to have the knowledge of business processes running in material management. Since SAP MM is also known as an ERP system, hence, it's considered one of the best tool to deliver the work in a more efficient way.
If you want to learn SAP MM from scratch, then here's the right video for you:
If you are more into reading, then do check out this material provided by Intellipaat:
The additional benefit of using SAP MM is professionals can customization SAP MM as per the individual company's requirements. SAP is one of the most time effective and easy tool to use. So, looking at the demand of today's market one can easily conclude that if you are interested in learning SAP MM it's definitely going to be valuable enough for your career growth.