"Enjoy every sandwich."
So said Warren Zevon when forced to contemplate his own rapidly approaching death during an appearance on Late Night with David Letterman. Would he have it any other way? The cult of Zevon should be pleased that the musician’s posthumous biography, I’ll Sleep When I’m Dead: The Life and Times of Warren Zevon, has proved to be a fearless, honest portrait, with both high praise and unsavory details. Written by his ex-wife, CRYSTAL ZEVON, this oral history includes among its interviewees Bruce Springsteen and Bonnie Raitt. And extensive excerpts from Zevon’s private journals reveal more than you ever thought you’d want to know about his sexual dalliances and industry fears. Crystal pays tribute to her rock-and-roll anti-hero Tuesday night at Porter Square Books, Porter Square Shopping Mall, Cambridge | 7 pm | free | 617.491.2220.