That's my first guide and I done it just because i haven't seen any good one since Fiora has been released. That's the one i play with best. Feel free to add your comments/other possibilities.

Chosen these ones for getting much AD - u don't need AS so much playing Fiora - your games are about chasing enemies and giving out as much as possible nuke damage in one hit. You need life steal and little bit hp for survi.

Pros:
Awesome nuke
Good damage output
Ulti which works like Vlad's pool (for example to dodge kat's ulti)
Great surprise with Ripost (1v1 both low hp fight)
Double dash to enemy
With passive nice lane keeping

Cons:
Squishy like hell
Dies much if not played properly
Wrong use of ulti can be suicide
No really good escape mechanism (that's why u need Flash)

Great nuke character with low survivability, best if laning bottom with a tank on your side. Some clues: Spam W as much as possible, launch E while chasing, after closing range with Q try to hit him once or (best!) twice and use Q again, don't solo characters like Sion, Le Blanc etc. ULTI AND Q FOR LOVELY KS! Have fun!