Twenty years of litigation. A $19 billion judgment. Sixty law firms and 2000 legal professionals — and that's just on one side. Chevron in Ecuador can plausibly claim to be the messiest case since Jarndyce sued Jarndyce. "This scarecrow of a suit," as Dickens said in Bleak House, "has become so complicated that no man alive knows what it means." Fortunately, The American Lawyer has been clearing the thicket of Chevron's Amazon case from the start. With a highly anticipated trial in the case beginning Tuesday, here's a field guide for those joining the expedition late...