I'm Yasuo is love 69, a Bronze IV (Normal MMR Gold) player on EUW. Now, disrespect me all you want, but I have mained Yasuo for over 30 levels on 2 different accounts and have 101.8k mastery points with him, so I should know what I'm talking about.

These are all very standard for an AD caster, the seals and glyphs are especially designed for mid lane as it's likely you'll get an AP matchup.

Statikk Shiv + Infinity Edge
This will give Yasuo the 100% crit chance (thanks to his passive), that he needs to be fully effective, as well as add more critical damage to his hits so it negates the damage reduction from his passive.

Blade of the Ruined King
This is for the sustained health shred way, you might wanna get defensive boots or Boots of Swiftness if you do decide to pick this up.

Bloodthirster
This is for the more bursty playstyle, if you want to sustain more or burst people down.
You want to grab the Berserker's Greaves with this one to lower down the cooldown on your Q.

Then you usually want to branch out to getting 2 defensive items, such as a Randuin's Omen along with a Guardian Angel to make sure you survive in the lategame. You might want to get some armor shred with Lord Dominik's Regards if they have a lot of tanks.

Not much to say other than that the E max is better than your Q max because you only get a slight damage increase with your Q, but with your E, you get a cooldown reduction, a damage increase, AND you can dash to the same target more often. Extra mobility is part of why Yasuo is so strong.

CDR doesn't do anything for Yasuo; his Q is affected by attack speed and E is affected by the skill level (hence maxing E).

Thanks for reading my guide! This is my first MOBAFire guide and I want to make more!
I hope this guide helped!