Here are some of the notebooks created to showcase various Apache Spark use cases. These are all using Databricks Community Edition which you can get at Try Databricks.

You can also access the source from : https://github.com/dennyglee/databricks.

JSON Support	GLM in SparkR	Window Functions	Random Forests
DataFrame API	ML Operations	Decision Trees	Statistical Functions
Data Import	Data Exploration	Quick Start Python	Quick Start Scala
Ad-Tech Example	Flight Delays	Genomics	Mobile Sample
Pop vs. Price LR	Pop vs. Price DF	Salesforce Leads	Spark 1.6 (Multiple)
Spark 1.6