Energyplus or any other building energy simulation prog. expert needed

Hi! I need someone that can use and teach me Energyplus software or something related to simulating energy requirement, consumption, etc. in buildings. I already calculated how energy in building work in comparing different types of rooftop surfaces (ASHRAE std.) using excel, but since further validation and reliability is needed, I need to validate them with related software. Any information on one on one class or anybody that could help me is much appreciated! Seoul is preferable! Thank you!