Useful lists of editing tips can be found in recent posts: 12 Tips for Better Film Editing by Oliver Peters and New Year’s Resolution List by Steve Hullfish.
More editing & filmmaking tips from Hitchcock, Scorsese, Murch, and others can be found in Hitchcock explains editing & the Kuleshov Effect and other posts on editing and editing tips.
Update: Little Frog in Hi-Def adds more advice -- but for production -- in "OH FOR PETE'S SAKE..."
Update: Chris Meyer has tips to adjusting music timing in Mangling Music Masterfully. See also Preparing for audio post – track management, roomtones, additional dialog, production by Woody Woodhall.