- Create AWS account, get API Key and API Secret Key.
- Log into https://requestersandbox.mturk.com and register as a developer, agree to TOS.
- Install Ruby library http://aws.amazon.com/code/Amazon-Mechanical-Turk/793.
- Download actual library source files http://rubyforge.org/frs/?group_id=4009&release_id=46940 to get example code.