I searched through the forums and couldn't find these videos, so I thought I'd post them. Could be useful to hear Paddy O'Brien explain the ELVs:
Part one: http://www.youtube.com/watch?v=UbOA8ff4FQ4
Part two: http://www.youtube.com/watch?v=vOshey2EEw8
Part three: http://www.youtube.com/watch?v=95QcbEvKNB0
Part one: http://www.youtube.com/watch?v=UbOA8ff4FQ4
Part two: http://www.youtube.com/watch?v=vOshey2EEw8
Part three: http://www.youtube.com/watch?v=95QcbEvKNB0