Zed is a meelee assasin, who relies on sending living shadows to mimic his abilities, allowing him to kill and farm safely.When Zed is in good hands, he can excecute his enemies within 3 seconds.

Pros
-Excellent split push skills.
-High burst
-Amazing poking skills
-Jukeeess with Living Shadow and Death Mark

Cons
-Squishy as hell!
-He risks his life to kill an enemy
-Easy victim for enemy jungler while Living Shadow is on CD

Farming with Zed is a piece of cake.His passive Contempt for the Weak is excellent for last-hitting minions.If you want to clear a big minion wave here is your solution.Cast Living Shadow towards the minions and then cast Razor Shuriken and Shadow Slash.Moreover, when low, farm safely with Razor Shuriken.

You might think that Full Build #2 is kinda fail.So in this chapter I will explain why it is so good on Zed.At first, Ravenous Hydra+ Zed's EXCELLENT SPLIT PUSH SKILLS IS OP! You can clear a whole minion wave in 3 seconds.At last, Sword of the Divine goes perfectly with Death Mark(e.x. You cast Death Mark,then pop Sword of the Divine's Active.3 crits= KILL.)

I usually don't play Zed as a jungler anymore. I would suggest you not to play him too! :/

There are 3 good combinations to poke your enemy hard.
COMBO 1:Cast your Living Shadow between Zed and your enemy.Then cast Razor Shuriken. This will lead to: good damage to your enemy while you are safe. WARNING! Be aware of ganks as long as your Living Shadow is on CD and DO NOT overextend to your lane.

COMBO 2:This is just a little bigger combo than the 1st one.Cast your Living Shadow and follow with Razor Shuriken. Then, cast your Shadow Slash and re-activate Living Shadow and land an autoattack to the enemy.Big combo with tons of damage.WARNING! Don't do this combo unless your enemy is in Living Shadow's range.

COMBO 3(ALL-IN COMBO):Open with Death Mark. Cast a Living Shadow behind your enemy and follow with 3 Razor Shuriken]s(TONS OF DAMAGE).Cast summoner's [[Ignite and then Shadow Slash. If you follow the 2nd Build, after Death Mark cast Sword of the Divine's ACTIVE (100% Attack Speed and Critical Strike) and land as many auto-attacks as you can. If you're low after the assassination, move away your position and re-activate Death Mark to re-position with the spot you killed the enemy.Very effective when you ult through walls.WARNING! Don't go very aggressive unless your ult is on CD.Just focus on split-pushing and clearing waves.