A very detailed Guide to Ranged DPS Carries. (Not only just whoever is listed up there)

Top Tier DPS Carries:
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2nd Tier DPS Carries:
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3rd Tier DPS Carries (These champions are better filling another role):
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Most important:
-FARM
-Right CLICK
-FARM
-HIT SKILL SHOTS
-DON'T DIE
-DID I MENTION LAST HIT
-FARM
-FARM LIKE YOUR LIFE DEPENDS ON IT
*Every 12-17 minions is gold equal to one champion kill
*Every 30 seconds there are 6 minions, 10 minutes = 120+ minions
-FARM
-OH DON'T FORGET TO FARM
-Hide behind your team and right click the other team!
-Run when Xin Zhao runs to you. Press F and use exhaust on him and right click him more!!!
-Kill the other DPS Carry
-Run when Irelia jumps to you
-Make your team focus whoever is coming at you, even if its their freaking tank!!!

VIABLE:

Flash
Exhaust

NOT VIABLE:
EVERYTHING ELSE

Flash vs. Ghost
I Flash though a wall, with ghost you have to run around.
I Flash away from the enemy, who was about to drop a stun on me, if you used Ghost, your opponent will very likely land his cc or whatever he has on you.
I run into their whole team: I Flash before they can get to me. I Ghost and they chase me down with all their snears, stuns, and slows.
With Caitlyn: 90 Caliber Net + Flash
With Corki: Flash + Valkyrie
With Tristana: Flash + Rocket Jump
With Ezreal: Flash + Flash
With Sivir: Flash + On The Hunt

Exhaust VS. Ignite
Your playing Caitlyn, Xin Zhao jumps to you. You Exhaust, he does no damage. You Ignite, he kills you before you even scratch him. Ignite might get you first blood and some kills, but late game, it almost falls out completely. Exhaust is a much better because it is a slow, and a blind, rather then something that does damage over time (Which people can STILL HEAL FROM)

For Most People:
Greater mark of desolation
Greater Seal of Armor
Greater Glyph of Scaling Magic Resist
Greater Quintessence of Attack Damage

or- (I use for Corki)

Greater Mark of Attack Damage
Greater Seal of Scaling Mana Regeneration
Greater Glyph of Scaling Magic Resist
Greater Quintessence of Attack Damage

OR- (I Use for Sivir)

Greater Mark of Desolation
Greater Seal of Armor
Greater Glyph of Scaling Magic Resist
Greater Quintessence of Health

General Build (Must build Infinity Edge + Zeal first, otherwise any other items can be switched around)

Boots
Doran's Blade (unless you can afford next item) You can get up to 3
B. F. Sword
Berserker's Greaves
Infinity Edge
Zeal
Bloodthirster
Phantom Dancer
Banshee's Veil

Viable Items
- Bloodthirster
- Infinity Edge
- Phantom Dancer
- Frozen Mallet
- Last Whisper
- Banshee's Veil
- Elixir of Fortitude

Not Viable
- Madred's Blood Razer, with infinity edge+ Bloodthirster you out damage this by a lot

Solo Lane
Start with Boots, I prefer to get 2x Health Potion pots and 1x Mana Potion. You can get whatever pots you like.
2 Styles you can play:
Aggressive or Defensive

Ad Carry Vs. Ap Carry
You would want to play very aggressive early game. Most ap champions do not burst until Level 6. When I play against Ap Champion, I harass them whenever they come for a last hit (unless i am last hitting). If the AP Carry wants to trade hits pre lvl 6, go for it. Just right click and spam your skills. Generally you do more then ap carries before they hit 6.
*DO NOT HARASS IF THERE IS A HUGE WAVE OF MINIONS AROUND YOU. YOU WILL GET AGGRO FROM THE MINIONS. MINIONS ARE OP, THEY NEED A NERF.

AD Carry VS. AD Carry
Get a feeling of your opponent's play style. If they are scared of you, which you should be able to tell after being in lane for a bit (trade blows, harass and run).
1)If he keeps harassing you, let him, harass back, try not to get aggro of enemies' minions. Let him take aggro from your minions.
2)If he is playing defensive, zone him. if you run at him and he runs away (which a lot do if you harass early game) stay between him and his ranged minions. This causes him to lose experience and last hits. Make sure you are last hitting while doing this or else it is wasted. If he tries to attack you, run at him and hurt him bad. Don't do anything stupid.

Duo Lane With Heal
Start with Dorans Blade, You have heal, there is no need for Health Potion if you have a support that can heal in your lane.
Just Last Hit. Last Hit. Last Hit. Did i mention you should Last hit? It's free farm, another solo lane, just that you have a heal on your side.
If you are laning with Taric, that is Imbue+ Dazzle (heal+stun). Go for harassment and maybe even first blood.

Examples of supports who heal: Soraka Sona Taric Karma
Supports Without heal: Janna

Duo Lane Without Heal
Start with Boots, 2 Health Potion + 1 Mana Potion
Normally when you duo Lane without heal, you are going with a champ that has stuns, or other crowd control.
EXAMPLE: Leona, Alistar Malphite Xin Zhao Garen

Last hit, Last hit, Even if your partner is trying to last hit, steal his. Just last hit and last hit.

*Map Awareness, watch out for those ganks!!!!

Farm, find a lane and farm. Mid Game Starts after you have Infinity Edge, Berzerker Greaves, and Zeal

Team Fight.
Stay in the back and shoot the other team, not much to it huh?

Scenarios:

The other team has 3 MIA, You are pushing bottom without your partner.
What you do: RUN

The other team has a jungler and you saw him with a ward.
What you do: RUN, or show him that you know he is there, he would normally back off (not wanting to lose valuable time). While this is happening, your jungler should be in their jungle taking their jungle, normally only happens in premade.

The other team have 5 mid, your team has 4 mid. You are at bot.
What you do: PUSH LIKE YOU NEVER PUSHED BEFORE, DON'T FORGET TO LAST HIT. TELL YOUR TEAM NOT TO FIGHT. IF YOU SEE THEM COMING FOR YOU THEN YOU'D BETTER RUN.

Your jungler is at dragon, trying to solo it. You are laning with Taric bottom
What you do: HAVE YOUR SUPPORT GO TO JUNGLE AND HELP GET THE DRAGON. Push hard, then assist in dragon.

Their team just killed 4 of your teammates, you survive, they are all low hp, like 3 hits maybe.
What you do: DEFEND Stay Behind turret and auto attack minions. Use your pokes. If someone like alistar or garren gets close to you, run from em.

Late Game you should have Infinity Edge, Phantom Dancer, Berzerker Greaves and a third item built, if you do not have that it is not late game for you at all.

Stay in the back of your team and dish out damage, don't let their anti ranged dps get to you.
Stay with your team at all times (unless you are planning to split push.)
Aim for their ap carry if you can, don't run into all of em. Generally if you can't hit ap or ad carry, you go for the tank. Even if your team yells at you:

Result #1
Noob Teammate 1: WTH Cait, why hit alistar?
Alistar: I am coming for you Cait (with a million hp)
ME: *Hits alistar over and over until he chooses to target someone else. HAHA now i am going to kill Annie
Noob Teammate 1: Sorry for yelling at you Cait, you are soooo pro.

Result #2
Noob Teammate 1: WTH Cait, why hit alistar?
Alistar: I am coming for you Cait (With a million hp)
ME: *Runs to hit Annie
Alistar: *Knock Up *Push to his team
Noob Teammate 1: Cait, you are an idiot, why would you get so close to Alistar.


You should make smart choices that allows you to live despite what your team thinks. Of coarse, if you are going against a Xin Zhao, Irelia, Jax or someone that is just going to jump you, just Exhaust him and have your team help kill him.

Caitlyn has the longest range in the game at Level 1. This makes her the best shoot and run champ.
* Annie shares the range as Caitlyn but she is a mage so you should do more damage early game
* Caitlyn is one of the best zoners, because of her traps. (If they step on it, hit them hard)
* Caitlyn is one of the best farmers and pushers (piltover at high lvls can easily take out the back row if used correctly.
* Caitlyn has one of the most fun ults in the game.

Boots
Doran's Blade (unless you can afford next item) You can get up to 3
B. F. Sword
Berserker's Greaves
Infinity Edge
Zeal
Bloodthirster
Phantom Dancer
Banshee's Veil
6th item of your choice

Tips for Farming
- Caitlyn has a long range, you should be able to last hit without too much harass.
- Caitlyn's Piltover Peacemaker is a good skill to use to both last hit minions and harass, but don't spam it too much, it costs lots of mana.
- Caitlyn's Yordle Snap Trap can be used for map awareness and zoning.
-Your Headshot should be able to kill minions under half hp.

Tips for Harassing
- Caitlyn has a long range, hit and run often works.
-Shoot a Piltover Peacemaker if the step on your trap, follow up with an auto attack
-Your Headshot does massive damage.
-Don't shoot out of a bush as it can reveal you or your team mate for a short time (Long enough to land CC and destroy you)

Tips for Team Fights
- Piltover Peacemaker as many opponents as you can.
-Use your Ace in the Hole before or After a team fight
-If the situation seems fit, you can possibly Ace in the Hole to last hit one of their squishies.

Tips for R
-Spam your Ace in the Hole to test damage.

Tips for Skills
-Landing a 90 Caliber Net will easily slow the enemy down, and can allow you to follow up with a Piltover Peacemaker.
-Using this early game, you can do a huge burst of damage with Piltover Peacemaker and the 90 Caliber Net, at Lvl 6, you can potentially kill the other team if used correctly.
-Your 90 Caliber Net can push you through thin walls. Use this to escape ganks or to catch up.

Corki is one of the best Ranged Dps out there, with his passive he can dish out loads of damage early game compared to other DPS Carries, and it only gets better as the game goes on.

At Lvl 1 with Doran's Blade (assuming you are duo lane) You hit 79 Damage (Too bad no armor pen? You shouldn't aim for their support or tank if you are harassing) and 8 true damage. His Q does 70 Magic Damage.
Summary:
LVL 1
79 Physical Damage
70 Magical Damage
8 True Damage

He bursts down nearly every champion at LVL 1, And the thing is, the more items Corki gets, the more damage he will deal. Using same builds as other DPS carries will give him a big advantage in damage.

Corki's Build
Boots
Doran's Blade (unless you can afford next item) You can get up to 3
Phage
Zeal
Berserker's Greaves
Sheen> Trinity Force
Zeal
B. F. Sword> Infinity Edge
Phantom Dancer
Last Item of Choice:
- Banshee's Veil
- Last Whisper
- Black Cleaver or 6th item of choice.

Tips for Farming
-Using Q, you can last hit several minions at once.
-At Lvl 7, you can kill the entire back row of minions with Q and R.
-With true Damage+Normal Damage, there should be no reason why you miss last hits.

Tips for Harassing
-Watch your mana early game, you don't want to run out of mana.
-At Lvl 6, you should wait to get a few stacks on your ult, then begin to abuse your poke.
-Before Team Fights: Spam your ult and try to do as much damage as possible (aim for their carries)
-You see someone with a blue bubble? Pop it like a little kid with your darts.

Tips for Team Fights
-Save W for escaping OR Catching Up (make sure its safe to do so)
-Remember to use your E to take out the other team's armor.
-Spam Your R.
-Try to hit as many people with your Q as possible

Tips for Corki's Ult
-Spam, Spam, Spam.
-If you are at base and not in a rush to get to lane, shoot until you have enough for a big bullet.
-Your Skill shot does AOE DAMAGE, that means if you hit a minion near someone then the champ also receives damage. It helps for farming.

Tips for Skills
-Your E shreds armor, this can easily destroy the tanks.
-Your Q reveals unstealthed units, instead of face checking bushes, use your Q to check bushes.
-Your W can go through certain walls, which helps in chasing and escaping.

8/17/2011
*First Publication of Guide

8/18/2011
*Extra Details to Corki (Tips for Skills) and Caitlyn (Tips for Skills)

More updates to follow.

8/19/2011
*Added pictures
-Updates to come: Laning Partners, Ashe