Talon is a very strong assassin some people use it mostly with basic attack but i think his skills does pretty much more damage than his basic attack.

Talon has a really great teleporting skill (E) you can use this skill to juke you re enemy in case you get ganked.If it fails dont hesitate to use your ult.And if you are getting yumu blade dont forget it unique active that gives additional movement speed and attack speed.Very usefull when you are chasing someone or taking down a turret.
A good way to use the whole blades of your ultimate on your enemy is goin infront of them or behind them pop your ult then use E to maximize the damage of your ult.
When you are hitting a turret always use your Q it will deal more damage on your next basic attack it helps if you wanna get rid of the turret quickly.