Crystal S. Lewis, who writes the blog Diary of a Christian Universagnosticostal, recently wrote a series of eight posts on the subject of hell. The first of these posts, and therefore the proper starting point, is God Didn’t Invent Hell. We Did. While her views differ from mine* in some important ways, they are beneficial in many respects.
*My views are laid out in various places on my blogs including The Biblical Case for Everyone Going to Heaven and Essays on the Implications of Everyone Going to Heaven.