If you are familiar with building simulation already, you
can use the 200+ example files that come with the program along with the
Input Output Reference (which describes each input and output) to help
you.
If you are not familiar with building simulation, we suggest you
start with the "Getting Started" document and work through the
tutorial examples there.
There is an online tutorial,
http://www.vibyor.com/tutorials It's a brief tutorial made by Prof. Vishal Garg, from IIIT Hyderabad,
India.
There is also a forum on vibyor where the participants of the course can
discuss their problems.
If you want to bypass all that and just generate an example for your
building that you can start using and learn that way, you can use the
EnergyPlus Example File Generator application at:
And don't forget this is a peer-to-peer forum. If you really
get stuck and can't find it in the documentation, there is the EnergyPlus
support helpdesk.