Turning Points Analyzer - a very good class written by James Ranum based on his experience;
Turning Points Analyzer module - ten years later... - this is a description of the updated TPA module (updated March 2015). It allows to see predictable zones for support and resistance levels on the same screen;
Each and Every 7th Wave... - a description of some special application of the TPA module. It allows to analyze "long memory" waves, like finding a correlation between a current wave and the wave 7 swings before:
Stock market waves in the light of the Moon - it is a description of an experimental approach that allows to analyze turning points together with astronomical factors. This is the explanation of "Astro Confirmation" option.