Itemization isnt that hard, the goal of the game is to be 17/31/3 for MC/BWL/AQ (this is the best spec, no discussion possible)
To achieve this goal, you need to have 8% hit on your gear to bypass surefooted, so unless you are full T2 (it's a curse before zg) you need T1 gloves/T2 pants/Accuria/Domo bracers or if dominant enought in your guild DFT
Accuria is the best ring you can get until Naxx if you never get DFT, dont believe the bullshit from melees, accuria is bis and increase your dps by roughtly 10% by switching spec from 2/31/18 to 20/31/0 or alike
After this for some pieces, it's a matter of circumstance, if you are world buffed: Prestor > Onyxia necklace, if you are not Onyxia is better because more you have crit less you benefit from it.
For weapon Brutality + cht are bis, Dal rend set coming 2nd, then Barbarous blade and double hatchet.