Spark DataFrame courses
edX offers some spark courses. Try the following:

https://www.edx.org/course/introduction-apache-spark-uc-berkeleyx-cs105x?gclid=CjwKEAjwm8-6BRDgnb-Dk96UmRASJADbMycYmMKC3xWs_3jGV9pUd0k3gxIbQRHE2H4_hlXeNMw1BhoCqHjw_wcB

I believe this is through a partnership with Databricks