Many workouts are available online at www.usms.org
From about.com: Swimmers, new to advanced, these will help you develop better swimming technique, improve swimming fitness, design swim workouts and swimming practices, and build season training plans.
Stroke Technique: a series of articles written regarding specific stroke technique improvements. from www.USMS.org
Coaches' Infoservice The Coaches' Information Service website is designed to deliver the latest sports science information to sports practitioners including coaches, participants, physical educators and practitioners in the medical health vocations that have a sports focus.