Whats up Guys!?!
Here's another great build I've been using lately for Ezreal and it has been really successful so far. Good luck and fun with this cause I have.

The second Ezreal build is the one I am now using because it has been good throughout whole games from start to Finnish but 1.0 is still good you just need to farm a lot more than you do with v2.0

-Pros-

-Good spammable abilities
-Good Nuke
-Great escape ability
-Has great animation

-Cons-

-Squishy
-Low mana
-First to be targeted

You must farm minions. As an AD champion you need as much gold as possible which also makes Ezreal a great mid lane champion. later in the game you will still want to farm, as items will become more expensive. A great way to farm through out the game is to last hit everything. Later you can kill the jungle monsters for more gold and should always take the blue and red buff when you can.

Exhaust and ghost are great spells and I take them every time besides switching out ghost for flash sometimes but they are great escaping abilities and engaging abilities.
Exhaust is great for those you try to escape you and those who want to gank you.
Ghost great for chasing and running away.
Flash is another great escape/engage ability.

I've Noticed a lot of people not knowing when to use your ult with Ez so here we go...
True Shot Barrage is great for sniping people across map at the beginning of the game. And can keep you from tower diving. During team fights True Shot can be used two different ways, either take the shot to give your team the advantage or kill off the runners at the end of the fight. This can also save a tower from a huge minion wave.
Mystic Shot is your main nuking ability as an AD champion. It is a skill shot that is great for last hitting minions at the beginning and has a huge range. It is also great for kiting your enemies. You want to make sure there are no enemy minions in front of your target for mystic shot to hit.
Arcane Shift is going to be your next most important ability. As you shift to another position with this skill you fire a homing arrow towards the closest target to you. This is also a great escaping mechanism and can be used to jump over walls.(Like having an extra flash on you) It is great for harassing enemy champions by shifting next to them and firing a mystic shot bringing their health down a good chunk. Also great just to land a mystic shot to have no targets in your way.
Essence Flux is the last ability which is ok but nothing amazing as an AD champion. I usually use this ability to get another proc on my passive and to slow their attacks if someone decides to try to gank me. Great for team fights, Speeds your friendly champions attack speed and slows enemies while hitting multiple bringing your passive to proc to increase your attack speed.

Your passive is great for farming minions and dealing a lot of damage quickly with your auto attacks. Your passive procs by spamming your spells but it only procs when you hit a enemy minion or champion. This stacks up to 5 times giving you a 50% bonus to attack speed.

Every game I rush to get my B.F. Sword then boots but if for any reason I would have to go back before I have enough to buy the B.F. sword I will buy two more dorans blades then boots. This is usualy about 1000G (this is just an estimate). Then later you will sell as many Dorans Blades as you need to to buy your B.F. Sword or even your Blood Thirster.
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But Through out the rest of the game I choose this item build to max out my damage output. The Blood Thirsters give a lot of life steal and damage especialy when you max out thier bonus AD and life steal. The Trinity Force gives you everything you could ask for AD, AP, attack speed ex... with the Blood Razor you can always do at least 4% of their health in damage and with the Bow you will get enough armor pen to still be able to do quite a bit of damage to tanks.

Core Items

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Armor Pen is Great for early game harasing and killing low armor champions. It also can keep you from having to buy your armor pen items until closer to end game. The mana regen helps for how much you spam your spells and keeps you lanning through out the game.

Though you have regen runes you should still get blue buff after you get your first Blood Thirster then red buff right after. Ezreal is extremly strong with both these buffs especialy when you can spam your spells with the blue buff.