1) Download Apache spark from http://spark.apache.org/downloads.html
2) Extract files and open Readme.md documentation.
3) Building Spark using Maven requires Maven 3.0.4 or newer,Java 6+ and scala.
4) Install JDK and Maven and setup the paths in system variables.(http://maven.apache.org/download.cgi)
5) Run command mvn -DskipTests clean package for building the package
6) Install scala http://www.scala-lang.org/
7) Update scala system path in system variables.
8) After building completes invoke spark shell using ./bin/spark-shell
