The most important thing to know about the Great Canon
The Great Canon was written by a holy man to teach
himself the right way to live. We cannot benefit from it unless we make it a
priority to stand in prayer, in the church, and listen to it, with a great
desire and expectation for God’s grace to teach us and heal us. Our theology is
first and foremost – experienced and prayed, and not only “studied”.
Source: http://www.orthodox.net/greatlent/great-canon-of-andrew-of-crete-explanation.html