Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
OpenStudio is merely a GUI for the EnergyPlus engine so most of what you see in OS is reflected in the EnergyPlus Documentation, specifically the Input Output Reference.
If you are just getting started, the new OS website has a lot of information for that after which the IO Reference is indispensable for learning what everything does in OS.
If you want to know what an object does in OS I suggest doing a search of the EnergyPLus Object Index.
