http://www.wowhead.com/npc=43228/stone-trogg-berserker#map This shows you where you are farming. Here is the breakdown for 30minutes of farming:

33 � stacks of embersilk cloth worth 50g each = 1675g
4 79 twink items worth roughly 150g each and 1 worth 90g = 690g
7 green which disenchanted into 3 Greater celestial essence 30g each and 8 hypnotic dust which will be saved for months down the road into MoP when they are actually worth a couple gold each = 90g
25 pyrite ore worth 50g
6 volatile fire, 10 volatile air, 6 volatile water, 22 volatile life, 21 volatile earth worth 210g
27 grey quality / food vendor items worth 86g in total

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For raiding tips once you reach level 90 visit
http://wowraidingmadeeasy.blogspot.ca/