Hello, this is my first guide and everything is based on my skill and rogue class knowledge.
First of all, you have to choose your spec. Now 2 are possible but with idfferent variations: Mutilate and ShS ofcourse.
I use 20-0-41, however there are different types of ShS spec, for example 17-0-44 etc.
I have never been using muti so i'll tell about ShS rogues.
Rogues get focused on arena not so often, so we have to be geared on DPS and for about 350 resi, personally i have 329 only.
I use Belt of Deep Shadow (LeatherWorking boe craft, with 2 20attak power gems on it). Why this? It has good amount of AP, Hitrating and AGI too, so this is your only choice.
Neck - neck should be from Shattered Sun Offensive exalted reputation, but only if you are aldor, cause it procs for 200ap +, which is kinda overpowered imho.
Boots - I chose sunrage treads with 12 AGI enchant and +20ap gem on.
All items which are not listed are vindicators with full vengeful however imba rogue could be with full glad too.
Profs, Jewelcrafting and Enchanting only! Jewelcrafting is needed, because there are gems for 12 crit rating, 24 attack power and ofcourse imba trinket [Figurine - Shadowsong Panther], which is overpowered too much i think
And enchanting for a +4 stats on rings.
Now about item gems and enchants.
Lets start from head:
The best variant should be cenarion exp revered head enchant 34 ap and 16 hit rating, with meta gem for 24 ap and minor run speed and i used jewelcrafting gem 24ap into the red socket
Next,
Neck - if you choose exalted next with shattered suns, then no gems are needed, if vindicators, i'd use 5 crit 10 ap (epic)
Shoulder - Aldor/Scryer exalted shoulder enchant ofcourse + 16/20ap and 4/5 crit 8/10ap
Back - i am kinda crazy on ap, and i chose 12 agi however this is posible to get stealth level up on this one.
Chest - +6 all stats enchant only cause it gives you crit rating, dodge, and 12 ap. 2 ap red gems and 1 orange crit/ap gem.
Bracer - 24 ap ench and 16 / 20 ap gem imho
Gloves - 15 agi only, because 26 attack power you get little bonus on ap however lose dodge and crit.
Belt - if you use leatherworking boe one, than 2 red ap gems in vindicators, so there are no gem slots=)
Pants - 50 atack power 12 crit is the best variant.
Boots - 12 agi ofcourse
Rings - +4 all stats and i suggest to buy 1 ring from the badge vendor (shattered sun)
Trinkets - JC panther trinket and meddalion of the alliance / horde
Weapons - MH - executioneer, oh - mongoose. The best variant.
Thrown - suggest to take thrown from the magister terrace heroic, 1st boss drop [Distracting Blades], or maybe Brutal Glad's thrown
Ty for your attention+)
my char