Just a quick vid i made to explain to anyone my understanding of SPDs, not a perfect guide by any means, but try talking and riding, its not as easy as it sounds. I hope this helps someone.
Part 1:
View: http://www.youtube.com/watch?v=uLjmld2bLA8
Part 2:
View: http://www.youtube.com/watch?v=0rmnw7PxYUY
Part 1:
View: http://www.youtube.com/watch?v=uLjmld2bLA8
Part 2:
View: http://www.youtube.com/watch?v=0rmnw7PxYUY