The best resource for PySpark is from the Apache Spark’s documentation page itself: https://spark.apache.org/docs/latest/. If you wanted to get started with PySpark, Niall McCarroll wrote a good one here: http://www.mccarroll.net/blog/pyspark2/. I also wrote an introduction to PySpark in another blog post: https://gab41.lab41.org/transformers-rdds-in-disguise-5890de0ef728#.dd7lgktaf.