Hadoop
Yahoo! Hadoop Tutorial: http://developer.yahoo.com/hadoop/tutorial/index.html
Big Data University Courses: http://bigdatauniversity.com/courses/
Cloudera courses:
MapReduce Framework - 1 hr video introduction
http://nosqltapes.com/video/understanding-mapreduce-with-mike-miller
The 2004 paper from Google that kicked off the MapReduce revolution http://research.google.com/archive/mapreduce.html
Google University (they removed the Map Reduce Tutorial, it was part of code.google.com)
Quick guide to get started with Hadoop: by Prasant Sharma
Hadoop Blogs:
Praveen Stripati (good collection of resources)
SQL-like layer on top of Hadoop - Hadoop on demand
Hands on with HDFS, MR, Hive, Pig, Hue, Sqoop, Flume, HBase... all here:
http://www.ibm.com/developerworks/data/library/techarticle/dm-1209hadoopbigdata/
Introduction by Scott Leberknight at NoVa JUG. I attended this, happy to see this available on youtube.
Eric Sammer is an architect in Cloudera and his style is lucid as well as detailed. http://amzn.to/VfAoOy
Hortonworks' Sandbox -- hands-on tutorials and a complete personal Hadoop environment: http://hortonworks.com/blog/hortonworks-sandbox-the-fastest-on-ramp-to-apache-hadoop/
www.casertaconcepts.com.
Blog: http://www.thecloudavenue.com/p/hadoopresources.html.
Free videos at http://academy.mapr.com.
Free Hadoop Training
Open Source Big Data for the Impatient, Part 1: Hadoop tutorial
http://www.ibm.com/developerworks/data/library/techarticle/dm-1209hadoopbigdata/