MY Riven build, hate it or like it idc.
NB! Play smart with Riven, ur not Rambo / Trynd so chillax.
NB2! Avoid death as much as possible. Riven have 3x Q and 1 E to get away with.

Use 1 spell at a time. (read Skill Sequence)

Dont panic faceroll the skills
The main thing: "skill" autoattack "skill" autoattack etc. but it depends on what situation u are in. example.
"UR R BOOSTS ALL UR SPELLS AND AUTO ATTACK!"

Harass : E W (Q away) or Q Q Q in W -> E away

1v1 : R E > attack > W > attack > Q > attack > Q > attack > Q > attack > etc

"R's spell is an execution spell. so use it to finish enemys off or when they try to run"
On Teamfights go with what u feel like LOL
(i max W first cause u get more bonus than u do with ur Q and Q is most likely the spell u use to run, get close to them, and to get ur passive)

Why Trinity Force? 150% + in next attack is pretty sweet with ur passive spell. + chance to slow.

Warmogs for survival but u can take whatever u want actaully just something that keeps u alive longer or just take what u want.

Bloodthirster: REMEMBER TO CHARGE EM!!!

Black Cleaver: Heavy Damage

Ghost & Exhaust

Riven's damage is most likely her autohits.

With ghost u can land more hits while chasing then u do with flash.