Okay my last guide went really in depth and took a long time to type out. I'd like to make these quick as they shouldn't take much explaining.
Anyways... I play an AD Cho'Gath. Which is a little weird. I figure atk speed and his Vorpal Spikes do a lot of damage.
I start with attack speed runes, with crit chance quints.
First item I grab is Rejuvenation Bead and SIX health potions. I'm not dying anytime soon.
After that I either finish building Emblem of Valor or get Berserker's Greaves.
Once I have those items, Its free kill time :D
More attack speed and movement speed is great. So one or two phantom dancers isnt bad.
After that just build whatever you see fit.
AD Cho is a lot like playing the Alien from Alien. Hide wait, attack with everything, back into hiding.
WARNING: People are dumb and think Cho is strictly a tank. People will yell at you until you begin getting kills. Cho isn't even really a tank. He is more of a beefy dps like an Olaf.