Oracle has released a new Virtual Machine focusing on Big Data and Advanced Analytics. The Full Articel can be found on the Oracle Blog Articel. This Machine does not only contain the Pre-Installed Software and Sample Data Sets to work on, but also a set of Labs and Hands-on Training Material. To get to the Image: click here.
Additional Information on the Big Data Appliance is provided here.
There is also a dedicated Learning Library for Big Data (OOL) and additionally Learning Videos have been created on Youtube. A more broader discussion on Oracle Big Data is within this Roundtable Discussion.