Hello, this is Craxxx, and I'm about to make a guide about Kayle.
Kayle is a very underrated character. Shes able to both support and carry the game. :3
Note: I'm not gonna tell you that you're gonna run around and kill everyone. The only thing that actually can kill you, is yourself. Remember to have an eye on the map and the other on the minions.

For runes I would go with:

9xGreater Mark of Insight 0.95 Magic pen * 9 = 8,55 magic penetration

9xGreater Seal of Clarity 0.065 mana regen / 5 sec. per level. 11 mana regen at level 18 will help you keep up your Divine Blessing, Reckoning and Righteous Fury up at all times.

9xGreater Glyph of Celerity 0.05% cdr per level. 8.1 cdr at level 18. You wanna carry the game, so cdr is great for you too keep up your Rigteous Fury at all times. :)

Utility is great for movement speed, faster exp, longer buff. Extra gold (only if you have problems with minion kills, but I would recommend it anyways, and offense for extra magic pen.

E->W->Q->Q->Q->R->Q->E->Q->E->R->E->E->W->W->R->W->W

1st Priority: R
2nd Priority: Q
3rd Priority: E
4th Priority: W

E for last hitting and harass at start, and W for staying in lane, you wanna farm as long as you can.

Alternative build to level Rigteous Fury, before Reckoning.

Flash - Escape/chase
Ghost - Escape/chase :D


So simple.. RUN, FOREST, RUN!