Here are links to some good stuff.
A blog initiated by John Shelby Spong with weekly posts from leaders in progressive Christianity.
Fr. Thomas Keating’s organization. How-to on Centering Prayer and Lectio Divina.
Youtube channel of a cutting-edge thinker: cognitive scientist, philosopher, meditator, martial artist, teacher. The Awakening from the Meaning Crisis series alone is a gem, but there is much more.
Moving Beyond Belief: A New Focus for the Christian Faith
This little book by Rick Herrick is an easier read than Honest to God and gets to the same core point from somewhat different perspectives.