I mentioned this workflow in a January 28 post “Export Revit to EnergyPlus“, now these video tutorials are up on the openRevit YouTube channel:

Introduction

Room Bounding Objects and Material Construction

Zones, Model Review and GBXML Export

Ecotect Import, Model Review and Prep for IDF Export

Exporting IDF for EnergyPlus

Importing IDF into OpenStudio/Sketchup for Review

Construction Verification and Review in IDF Editor