Is there any reason for choosing IE before BT? (sorry if nooby question im still pretty new to the game) I find that i often do much better getting bt since it comes out allot cheaper (assuming you get vampiric septre either way)

The reason you don't go BT first is because so much of the value is tied up in the stacks. The mid game tends to be volatile and youre likely to die and lose those stacks and some of the value. 

Hey, after the next patch, do you think it will still be valid to use flat MR blues on a standard AD page?

Yes, losing 1 point of MR means you will now die instantly so flat MR glyphs are not viable. You should now run magic pen glyphs so your traps do OP damage.

It looks like that is what most pages have been changed to.

I believe (and hope) your being sarcastic with RIcochet... Magic Pen glyphs are a no-go, if ever gonna replace those flat MR (which now give you 3.6 less MR total) do it for MR/Lvl, which I tend to use unless against heavily strong gankers like LB on mid.

Nice job

very good guide i saw what have in here and i was empressed 

I think the guide should be updated to include in the "Tips and Tricks" section that Caitlyn's 90 caliber net can also effectively get you out of Veiger's stun wall when used correctly. Just found it out recently, so thought I'd mention it.

Usually when I play Cait the other Ranged AD counters me by getting a Wriggles.  Of course with that armor buff they are much more resiiant to my harass.  Would picking up an early Black Cleaver be a good idea to help counter that?

So I should build Last Whisper no matter what? What if the enemy team didn't build armor? I don't mean to sound rude but I am the kind of guy that really needs explanation on things. I don't just want to take your word for it.

"You should go flat AD Quintessences and Marks because this gives you stronger harrass and easier last hitting early game. People complain that you should get armor penetration, but this is unnecessary as AD carries aren't going Wriggle's Lantern anymore. If you have an enemy AD that you know is going Wriggle's Lantern, it isn't bad to get Armor Penetration runes, but if not, you don't really need them. They may scale better into the late game, but in solo queue, the game is usually decided in the laning phase."

This what I'm talking about. This is from Cop's Graves guide. He does a good job explaining the switch to AD Reds, and I thank him for it.

Very nice guide but to be fair I think Sivir is a very effective counter against caitlyn, its true caitlyn has more range but with sivirs boomerang blade she can easily deal serious damage to caitlyn and can outsustain her by countering caitlyns piltover peacemaker with her spell shield, which can also be used for caitlyns trap and ultimate.

It really comes down to dodging Sivir's BB.  If she's not hitting that skill shot Caitlyn will out-lane / poke her all day.  Honestly, I just played a game against Sivir and had no problem out poking her and dodging the blades.  This allowed me to dominate her in lane by pushing her back to turret with suprerior poke / quick damage output.

Now, if Sivir is laning with someone who has a hard stun, like Taric, then it might be a bit different.  However, I feel like most people should be able to dodge BB if you've aware and have good side / random movement in lane.