There are over 450,000 registered developers and operations professionals who have taken free online courses at MongoDB University, making March a great month to learn MongoDB or continue advancing knowledge. Several introductory courses are running between March 21 and May 16, covering basic installation, schema design, querying, and more. These courses offer hands-on experience with building MongoDB-based applications, including projects such as a blogging platform using Python, Java, Node.js, and C#. To get started, sign up for one of the introductory courses offered by MongoDB University.