If everyone could please watch these videos, it will give you a great help in understanding the fights, much better than my tatics on the day.

Freya:

http://www.youtube.com/watch?v=mc2ZOf3CkKA&eurl=http%3A%2F%2Fwww.tankspot.com%2Fforums%2Ff206%2F48989-ulduar-freya.html&feature=player_embedded

Hodir:

http://www.youtube.com/watch?v=j7TcxJY1VQw&eurl=http%3A%2F%2Fwww.tankspot.com%2Fforums%2Ff206%2F48908-ulduar-hodir.html&feature=player_embedded

Iron Council (Assembly of Iron):

http://www.youtube.com/watch?v=vBPyfOnf18g&eurl=http%3A%2F%2Fwww.tankspot.com%2Fforums%2Ff206%2F48856-ulduar-iron-council.html&feature=player_embedded

Ignis the Furnace Master:

http://www.youtube.com/watch?v=Hp50gUCAqwc&eurl=http%3A%2F%2Fwww%2Etankspot%2Ecom%2Fforums%2Ff206%2F48907%2Dulduar%2Dignis%2Dfurnace%2Dmaster%2Ehtml&feature=player_embedded