I just read through the guide again and I noticed you left " You may also want to consider adding some background about you with Zed." in the intro, that isn't supposed to be there.

I will try to help you with the grammar for this guide.

In the "Hello" section:
Change what you say from," Hi, this is my zed guide. My name is Hunticek... If you want help with play zed check my guide. This is my second guide and i hope you look at it." to something alone the lines of," Hi, this is my second guide and it is on how to play Zed. In this guide I will cover runes, masteries, summoner spells, ability sequences, and items." You may also want to consider adding some background about you with Zed.

In the "Pros and Cons" section:
Pros:
Change "With his combo you can kill most important enemy" to " When used properly, Zed's combo allows you to target and kill important enemies quickly."
Change "Great farmer" to "Great at farming."
Change "Can miss spells with Living Shadow or with Death Mark" to " You can dodge enemy abilities with Living Shadow or Death Mark."
Change "Can easily destroy tank" to "High burst damage."
Cons:
Change "w/o ulti you kill enemy longer time" to "When your ultimate is on cool down it can be hard to kill enemies quickly."
Change "Can be often focused" to "Often focused"

Runes"
Armor Pen
Change "All attack spells except passive deal psychical damage." to something more in depth like ," I take these runes because all of Zed's abilities scale off of AD, except his passive."
Armor
Change "Against minions, junglers... and for some armor to late game" to "These help greatly to reduce your damage taken from minions and help increase your overall survivability."
MR
Change "Almost champions in league of legends have magic damage" to " Almost every champion has some sort of magic damage so these are all around good to have."
AD Quint
Change "Same as red rune" to " I take these runes to increase the damage of all of Zed's attacks and maximize his potential output."

In the "Masteries" Section
Offense
Change the heading to "Offensive"
Change " Sorcery - More ofter ability using." to " I take these so I can cast my spells as often as possible."
Change " You are damage champion." to " These are great for maximizing potential damage output as well."
You could also just include Havoc and Executioner in the same category has deadliness.

Defense
Change "Defense" to " Defensive"

This part is pretty good but you could change "Little bit more armor and MR" to "Take these to reduce physical and magic damage."
Change " Little bit more hps" to " Take these to increase overall health."

Summoner's Spells

Change "Summoner's Spells" to " Summoner spells "
Change "For start it will help to kill an enemy. In late game is good use it on tank or on reduce adc/ap carry heal" to " Take it for an early kill and it works well late game to get some extra damage in and to reduce healing spells when you are playing against someone like Yi or Alistar."
Change "I take flash for run. Yes i have living shadow but i using it chief to offense." to " I take flash for escape. You should still take flash instead of living shadow because you often use living shadow in your combo."
Change "This spell is good to early game. But in late game you will kill adc or ap carry on one combo." to " Works well early game but in late game you will be killing enemies in 1 combo and chasing will not be necessary."
Change "Is good to catch enemy but when they flash over strong wall living shadow don't move you into this wall." I wasn't you sure what you were trying to say but here goes " This is great for catching enemies and if they flash over certain walls you can still cast living shadow to get over it."
Change "This is good for helping your team and increase your farm" to "This is great for split pushing and coming in for team fights. It can also be used to get back to your lane faster to maximize farming.

"Ability Sequence"

There would be too much text to tell you how to rework every sentence so you could rewrite it like this ," Now your ability sequence... I max Shadow Slash first because it is your only form of cc and it is great for farming because of the low cooldown. When you are using Shadow Slash try to hit an enemy as well as the creep wave. Only use Razor Shuriken to get creeps that are far away because of its high energy cost. I like to max Living Shadow second for chasing and the energy restoration. The low cooldown on Shadow Slash synergizes well with Living Shadow allowing you to get some extra damage on them. Wait to use Death Mark when the enemy is low so you can burst them down immediately after with your other abilities and the mark proc will finish them off. When you are involved in a team fight you will want to save your Death Mark for the ADC or APC.

Items

Change "What you need at items? You are spells user, damage assassin so you will need much armor penetration and damage. You don't need critical strike because you are spell build..." to "Since you are an assassin you will want to focus on building armor penetration and damage. I don't take crit in my build because Zed is a spell based assassin."
Change "Build from The Brutalizer Black Cleaver" to " Build this from The Brutalizer that you purchased earlier"
Change "When they focus you is good items to save you" to "The cleanse on this item is great for when you are getting focused and it can often save your life."
Change "If you want more hp buy it instead Frozen Mallet" to "Only buy a Warmogs if you need more HP than the Frozen Mallet gives you."

Add Randuin's for armor defense.

Ok guys thanks you for all comments. I will try to do it better

*grins*

This actually has a better item build than the top rated Zed guide on Mobafire. Unfortunately the rest of the guide needs a lot of work.

He didn't. Someone just downvoted without commenting prob

I have that kind of power :D

not

What the hell Meiyjhe you gave him two downvotes

Thou sins
1. The coding and the text in the runes chapter do not go well together. The coding is huge in comparison to the amount of text.
2. Barely any explanation in the item section
3. No summoner spell explanation and no tactics included in the guide
4. The ability explanation is literally what Riot gave you. Try to explain it in your own words.
5. Overal, your English is a bit weak. This is okay, do not worry, just try to format your sentences better :D. I am sure one of the grammar nazi's will help you with this :D
6. Overal minimum content
7. Title makes not so much sense grammarwise :P
8. No comment to vote

Thou blessing
1. Well structured cheatsheet
2. Overal nice build
3. Good use of structure
4. Decent use of coding

Result: Path of Redemption
I think the main problem with your guide is pretty clear, your English is bad.
The English gives you a lot of spelling errors and hold you back from writing large amounts of content.

I can see that you understand Zac, and it is a waste that you do not understand English in the same way. I recommend to ask a friend to help you with the English or go learn it yourself. English will help you a lot over the internet overal, so it is worth it to learn the English language :D

I feel sorry that I have to downvote you for this, but it really needs to improve.

Good luck man :D