InfluxDB University has introduced new courses on SQL and InfluxQL, two query languages for time series data. With the release of InfluxDB 3.0, developers can now use both languages to interact with their time series data. InfluxQL is a SQL-like language with time-specific functions, while SQL is widely used and versatile. The new courses provide training on key concepts, syntax, and practical examples for both query languages. Enrolling in these courses will help developers enhance their time series data querying skills.