All Orthodox Christians are united in the same Faith which was given by the Lord Jesus Christ to the Apostle and passed down through Church Tradition both unwritten and written (such as the Holy Bible). As time passed heresies (false teachings) arose and these were addressed through the Seven Ecumenical Councils and Creeds which precisely defined the Orthodox Faith.
Organized teachings of the articles of faith are present in the form of catechisms. Although our worship/practices (service types, fasting periods, etc.) differ because we are Western Rite Orthodox, the theological teaching is unchanged for Orthodox Christians throughout the world. There are a variety of online catechisms to choose from for further study. Our priest is also available and glad to share more information with you personally.
Holy Trinity has also developed some articles that expound on certain aspects of Orthodox: