-- http://www.efx-tek.com/downloads/ap-16_docs.pdf
Don't forget to try Audacity, our favorite freeware audio editor:
-- http://audacity.sourceforge.net
Good information here:
-- http://www.audacityteam.org/wiki/index.php?title=Main_Page
Our [basic] Audacity training document:
-- http://www.efx-tek.com/downloads/essential_audacity.pdf
... and training files for the document above:
-- http://www.efx-tek.com/downloads/audacity_demos.zip