How do I beat yasuo, as talon?

Normally, you'd max W first on Talon, but against Yasuo, just max Q first and use your one-point W to pop his shield. He should be no problem anymore.

the yas lane is a pain. what you want to do is max q first if yas is good at blocking your Rake (W) with wind wall. start off with a and 3 . try not to die in lane from lvl 1-5 ( play passive) try to get 850 gold then back and get . its active with take out yas passive, when ever he tries to trade with you use active, aa, q ,w that should let you win the trade then when you hit 6 wait for him to use wind wall because it stops your ult. once he uses wind wall go all in with E, AA, W, AA, Q,Ult active then your your ult will come back. that should be a kill if you have some armor pen runes or just use but mainly you want to roam after 6, go bot get a kill back then kill yas at mid. Hope this helps and GL on Next game

Start with slitting his throat.

Actually, that's exactly how you'd end it as well.

You can't do much for the first few levels, because he has better poke, manaless waveclear, shield and you have only 10 hp above him lvl 1, so you are both squishy, but his shield is for 100 dmg lvl 1. After you hit 6, Yasuo dies. He can beat you, if he gets armor items like Deaman's plate midgame, because you don't buy DPS items on Talon, but later you can burst him, if you get enough flat and % armor pen, even if he is semi-tanky with 1 or 2 defensive items.