On antipolygraph.org, there is a free download of a much more in depth (and apparently well-researched) analysis and description of techniques called The Lie Be

On antipolygraph.org, there is a free download of a much more in depth (and apparently well-researched) analysis and description of techniques called The Lie Behind The Lie Detector. Note that they very reasonably advise that unless there's pretty much no other choice, the best way not to fail a polygraph is not to take one at all.