Data Lakes courses can help you learn data ingestion, storage management, data processing, and analytics techniques. You can build skills in data governance, schema design, and optimizing query performance. Many courses introduce tools like Apache Hadoop, Amazon S3, and Apache Spark, demonstrating how these technologies support efficient data handling and analysis. You'll also explore key topics such as data architecture, ETL processes, and data security, equipping you with practical knowledge to manage large datasets effectively.