Tanya Birch from the Google Earth Outreach team has put up a great set
of slides on ODK at
Spread over three segments, the slides provide an overview of the
tools, a fun field exercise, and instructions on how to map and
visualize your data. It's a great way to get started with ODK.
Also, don't forget that ODK team keeps a list of training guides at
http://opendatakit.org/help/training-guides. If you have resources
like these you'd like to share with community, email