Hi, everyone! With this Guide i want to help you a bit with the Champ Diana.
So to start. I know the most people will try to play her as a jungler like Phreak inside his Spotlight. But i prefer her as a laning champ.

I just choose the runs of the Spotlight. Because they fit really well.
As an Ap-champ its always recommended to use Greater Quintessence of Ability Power.
The only one special thing are the .

But they are a great addition for your passiv.

The Masteries are also similiar to the Spotlight. Just a mix of Ap-damage and a few things for your Endurance.

My Item Build i started with


But if you know that you are going to have problems on your lane you should rather start with
and

Instead of Guinsoo's Rageblade you can pick Rod of Ages to improve your Endurance. You should do this in case of a rather squishy team. But if there are enough tanky guys i recommend Guinsoo's Rageblade like the attack speed marks as an addition for your passiv.

For sure you should max Lunar Rush as soon as possible. Crescent Strike is your "damaging-skill". Max it at best as first. Afterwards for your Endurance i recommend maxing the Pale Cascade. Moonfall as last cuz its only a pull to catch enemys. But it deals no damage on his own and doesn t protect you or helps to escape. Its to help your teammates escaping and to catch enemys who try to escape. =D

But in the end. Its at you to pratice. =D
And maybe it helps to see how a game with diana can work.
So http://www.leaguereplays.com/replays/match/698705/
...and i wish you gl & hf with Diana and League of Legends.
Thanks for looking at my first Guide ;D.
And already Thanks for Feed-Back.
Ah, yeah you can ask if you have some question ;D
either in english or in german.