HI! I'm a Silver 1/Gold5 Ad Carry main with High Gold/Low Plat MMR and I main Caitlyn. This season I'm 10/0 with Caitlyn with a 6.4 KDA.
In previous seasons you might have wanted to start [img=skills/caitlyn/w.png] but ever since Riot introduced the trinkets into the game you should have no reason to check a brush at level 1. Instead, take [img=skills/caitlyn/q.png] for great level 1 harass as well as the push to level 2. Max [img=skills/caitlyn/q.png] first for more damage and a lower cooldown, then max [img=skills/caitlyn/e.png] to lower the cooldown on your escape. The damage on [img=skills/caitlyn/e.png] doesn't matter since it's magic damage and you shouldn't be buillding AP. Rank up [img=skills/caitlyn/r.png] every chance you get because the damage goes up by a significant amount.