Eight lectures by Swami Rama on the Yoga Sutras of Patanjali emphasize practical advice on the methods of Yoga and Meditation. The 13 hours of talks have been divided into 85 parts of 10 minutes or less.
YouTube home page of these 85 videos:
http://www.youtube.com/swamiramahimalayas
Playlist page of these 85 videos:
http://www.youtube.com/view_play_list?p=BBD86952A2239E79
Attaining Yoga or Union:
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Yoga or "Union" is attained by first training, balancing, and purifying each of the aspects of our being individually, and then systematically receding attention inward through those levels, expanding so as to experience the state of Union, Yoga, Samadhi, or Turiya.