I don’t think Kayle needs an intro.
If you really want one, just look at the Desperate Nasus guide. His guide is for mid lane only, though.
Whether you should play Kayle top or mid is mostly preference.
I hate mages and assassins, which is why I love top lane. You rarely deal with those annoying champs up there.
In higher elo you will suffer more on Kayle top, but it’s not impossible to reach challenger. Plenty of players already did it.
So why should you even listen to me?
I’ve played over 1,000 games of Kayle — basically since the moment I first touched League. I’m a true OTP, with around 95% of all my matches being on Kayle (1,200 total). I sucked with her for a long time because I was new to League in general, and honestly I still kinda am.
But my climb has been very consistent lately, so I figured I’d make a guide for my fellow Kayle enjoyers.
One important thing that helped me climb out of low elo was simply dying less.
If you’re low and you have no ult, don’t just sit under tower waiting to get dove. Recall, reset, and try again.
It’s much better than dying 50 times and throwing the whole game.