http://www.simonlow.com My teacher, inspiration and a great place to find retreats.
Additionally, enlightening, caring and practical teacher training
http://www.gudmestadyoga.com/julie_articles Julie Gudmestad was one of my Yoga Teacher Training instructors and has amazing insight, as well as experience as a physical therapist. Read and learn. I do.
http://www.yogajournal.com for information about asanas, pranayama (breathing practices), and much more
http://www.yogamatters.com for props and books
http://www.nmfclinic.co.uk/treatments.php# for Liat's amazing massage, reflexology and hot and cold stone treatments in Canterbury