The new course on GraphAcademy, Introduction to Vector Indexes and Unstructured Data, teaches users how to understand unstructured data using Neo4j and vector indexes. Students will explore unstructured datasets, create embeddings and vector indexes, and use them to search and understand the data. Through hands-on tasks, they will learn to process unstructured data, use chunking strategies, and create relationships between the data. After completing the course, users will be able to build a graph database of their unstructured data and query it using vector indexes.