Hi Guys,

my name is Probably Feed and actually I am unranked, which doesn't mean I am a bad player.
My main was Silver till I transfered him to RU - but thats a other story.
Today I will tell you my knowledge about Zed - the shadow Master.

Pros:

No Mana
Long Range Q - easy poke
Gap Closer/Escape Skill
Strong Early/Mid/Late Game

Cons:

If hard behind hard to comeback
Ulti can get countered by Zhonyas/Escapes

The farming with Zed is in my mind very easy. He has a strong waveclear cause of his q+e.
When you play against a ranged Champion for example Syndra you can stay behind your minions and last hit with your q, without getting poked down by her, cause you are not in range.
When you do it right there is no way to get you in laningphase.

As Zed you are mostly very squishy. You have a escape skill but the Cooldown is high so be sure you are not in front of your team.
Always stay behind and wait for the right moment to engage with your ultimate on the enemy ADC or APC to burst them down in Seconds.
If you do it right(with some pratice) you can kill the enemy ADC or APC very fast without getting any damage.
Always make sure that your ultimate is up before you engage, your ultimate is one of your importanst skills.

Start:
When you start always look what kind of enemy you have.

When the enemy is a skillshoter with strong damage - pick boots to dodge easier and u have some potts.
When the enemy is meele but you are sure you can beat him - pick dorans shield/blade.
When the enemy is meele(+AD) and you guess you will have some problems - cloth + potts
When you want to make some more damage but not sure if you need some more potts - long swoard + potts.

Blade of the ruined King:
This Item gives you lifesteal+Attackdamage+Attackspeed and the passive is good for your ultimate and can slow the enemy. Engage on Enemy with ultimate, use blade, spamm abilities, jump back to shadow and hope he dies.

Maw of Malmortius:
When you play against AP mid make sure you buy Hexdrinker early game to get some AD+Magic Resist. Maw is just the better Version of it and the passive can save your life for example against a Syndra ulti.

The Black Cleaver:
Black Cleaver is good cause it gives you ad+cd reduction(important on Zed) and armor penetration. The passive reduce enemys armor too, so you and your team deal more damage.

Last Whisper:
Last Whisper gives you attack damage and got a nice passive. 35% of the targets armor are getting ignored, that is great against tanks.

Guardian Angel:
Guardian Angel gives you a bit armor and a bit magic resist and got a great passive. As Zed it is a must have Item in my mind.

Youmuu's Ghostblade:
Youmuu's Ghostblade gives you crit(not so Important in my mind)+AD+CD Reduction. The passive is great too, you get movement and attackspeed. So you can do for example a easy inhib backdoor or use your ultimate on enemy and attack them very fast and deal so more dmg.

Randuins Omen:
Randuins is great cause it reduces the enemy attackspeed and give u some tankyness and also can slow the enemy. But its not a must have Item, just if u need some life and armor.

Warmogs:
If you are to squishy and get killed easy by the enemy get some life. Life is always great.

Ravenous Hydra:
Hydra gives you a stronger waveclear and can used with ultimate too. But I prefer blade of the ruined king.

Shoes:
Boots of Mobility - if you roam a lot it can help you to run from one lane to other in short duration of time

Mercury's Treads - when u need some magic resist and the enemy team got much cc

Ninja Tabi - if you need some armor but don't want to buy other items with armor

Ionian Boots of Lucidity - if you want some more CD reduction pick these

Thank you for reading my guide.
I hope it helped you.

If you need some more Information or miss something you can call me and I will try to add it.
This is my first guide so don't judge me to hard. :P