The Orthodox Church is evangelical, but not Protestant. 
It is orthodox, but not Jewish. 
It is catholic, but not Roman.
It is not non-denominational, it is pre-denominational.  

Learn more: 

Discover Orthodox Christianity

Intro to Orthodox Christianity
from OrthodoxWiki

"First Visit to an Orthodox Church: 12 Things I Wish I'd Known"
by Frederica Mathewes-Green

Orthodox Christian Network

St. Mary's parish welcomes inquirers and seekers of all kinds -- just call, email, or visit us.