For the lazy:
Part 1 - http://www.airs.com/blog/archives/38
Part 2 - http://www.airs.com/blog/archives/39
Part 3 - http://www.airs.com/blog/archives/40
Part 4 - http://www.airs.com/blog/archives/41
Part 5 - http://www.airs.com/blog/archives/42
Part 6 - http://www.airs.com/blog/archives/43
Part 7 - http://www.airs.com/blog/archives/44
Part 8 - http://www.airs.com/blog/archives/45
Part 9 - http://www.airs.com/blog/archives/46
Part 10 - http://www.airs.com/blog/archives/47
Part 11 - http://www.airs.com/blog/archives/48
Part 12 - http://www.airs.com/blog/archives/49
Part 13 - http://www.airs.com/blog/archives/50
Part 14 - http://www.airs.com/blog/archives/51
Part 15 - http://www.airs.com/blog/archives/52
Part 16 - http://www.airs.com/blog/archives/53
Part 17 - http://www.airs.com/blog/archives/54
Part 18 - http://www.airs.com/blog/archives/55
Part 19 - http://www.airs.com/blog/archives/56
Part 20 - http://www.airs.com/blog/archives/57