Spark unified Data processing - tarunchhabra/parakalo GitHub Wiki

https://aws.amazon.com/big-data/what-is-spark/

Also on udemy: https://learning.oreilly.com/videos/apache-spark-with/9781788994330/

https://learning.oreilly.com/videos/apache-spark-with/9781787129849

https://learning.oreilly.com/videos/analyzing-big-data/9781491985120/

https://www.ibm.com/cloud/learn/apache-spark

https://www.baeldung.com/apache-spark