Your basic workflow inside of 3DCoat, the tools you use and how you use them, work on a moderately detailed project from start to finish in detail, audio is essential.
I would recommend using Techsmiths tools, either Camtasia or Jing to record with, Camtasia for better quality control and longer recording and jing for shorter tutorials, couple this with their online storage, which has become seamless, it's one stop shop for creating tutorials http://www.screencast.com/tools.aspx
Take a break and walk in the sun, breath the fresh air