While my experiences and background may qualify me as an "expert" in some areas, I'd be silly to think I have it all figured out. There are others who have already put together great information to help us along the way. I'd love to share and promote the great work they do.
Urban Green - https://www.urbangreencouncil.org/resource-library/
CUNY BPL - https://cunybpltraining.org/
Building Energy Exchange - https://be-exchange.org/resources/
NESEA - https://nesea.org/
BCxA - https://www.bcxa.org/
ASHE - https://www.ashe.org/energytocare/energy-conservation-measures-ecms
AEE - https://www.aeecenter.org/
Practice Greenhealth - https://www.practicegreenhealth.org/
AMFP - https://www.amfp.info/nyc
Dept of Energy - https://www.energy.gov/eere/energy-efficiency
Energy Star GHG Conversions - https://www.epa.gov/energy/greenhouse-gas-equivalencies-calculator