„Hadoop: the Definitive Guide.“ is the most important text on Hadoop. Online you’ll find other useful tutorials.
So here just a quick list of good Big Data tutorials:
Hadoop
https://developer.yahoo.com/hadoop/tutorial/
https://github.com/templedf/javaone14_handsonhadoop (Slides)
Spark
http://ampcamp.berkeley.edu/big-data-mini-course-home/
Quick Start VMs
Cloudera and Hortonworks offers you VM Images (single-node cluster). That’s really cool.
Reference: http://www.oraclejavamagazine-digital.com/javamagazine/march_april_2015#pg52