Bhagavad-gita is the entrance. Then Bhagavata is graduate and Caitanya-caritamrta... This is the step by step. But if one is sincere everything becomes revealed. He does not commit mistake: Revision history
Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.