For starters plz vote and comment stuff you think i should change and what you like. Plz don't mess around this is my first guide.

Fiddle is a realy OP champion. With his fear and lifedrain he can own the lane and pretty mutch the whole map! Play him right and he'll not fail you!

PROS
Hard to kill
Good lifedrain
Easy to play
Dominates the whole map

CONS
Low range
Low mana early game
you easely get overconfident
unless you have a slowing item you not good runing away or chasing someone
expencive itemsbuild

Exhaust A good choise since Fiddle don't have any slows, this can be used to run away or chase someone to their death.

Flash My preffered choise since you can teleport over obstacle. The use of this spell needs no telling, flee or chase.

Ghost Like Exhaust but on you, you run faster and ignore unit collision. It has its uses but i've never fancied it.

Heal A good spell for most champions for obvious reasons, but nothing i'd use on Fiddle. You have Bountiful Harvest with low cooldown and if you have bluebuff you don't have to think about your mana.

Smite A jungle-only spell, since i don't like jungle that mutch i rarely use it but as the tooltip says, it does loads of damage to creeps.

Ignite Also a good spell, put this just before you Bountiful Harvest someone and it will tick damage while you drain doing loads of damage. I'd switch this with Exhaust since i think that Flash has more uses.

what's good with Fiddle is that he isn't as squishy as other ap carrys, and that means you don't have to be that afraid of being killed the first thing you do when you get spotted in early game. You should only use your spells on champions since you don't have mutch mana at start and your spells requires a bit of mana to be used. try to time your dark wind on casters and use Terrify and Drain while they're feared. Try to stay a bit away when there's more than 1 champion since even if you have survivability you can still die and you're not that strong early game. Ignite is also recomended since it can tick damage while you Drain them.

At this time you should've been able to buy at least Rod of Ages and you're getting a bit stronger. So now is the time to push your lane a bit and look out for were allies need help. also make good use of your ulti, it's good for baiting since you can use it from the other side of a chain of trees and cliffs etc. now is also the time if you haven't already done it, to fix the blue buff, this way you can keep your drains and fears comming.

If you've played well you should now be able to rape anyone. Try to keep track of the other team, are they in their teamplay or is someone running by themself? Save Crowstorm for teamfights, and don't run alone unless you know were you have the enemy team.

Terrify Fears your target for a few seconds, here's your chanse to drain or go ulti if your enemy is near enough.

Bountiful Harvest Your most cast spell. Use it to deal damage and to heal yourself. Make sure you don't get out of mana though since spamming it also drains your mana.

Reap Flies to a target and bounces to another target 5 times, dealing a bit of damage but best of all it silences it's target.

Crowstorm the most awesome ulti in LoL in my opinion. teleports you to your mouse cursor a short distance and the creates a storm around you that deals loads of damage to everyone inside the storm. very good when ambushing and in teamfights. It has a long cooldown so don't waste it.

First off, the build in the begining is what i use, if you don't agree with me then plz comment and we'll go from there.

So first item should be Boots and Health Potionx3. boots gives makes you able to keep up with fleeing champions and let you run faster if it's you that is fleeing. the health potions is good since you don't get your Bountiful Harvest untill lvl2 so you have them to keep your health up for that first lvl.
Doran's Ring gives health, dmg and mana reg which is very good at early game. Get your Sorcerer's Shoes for spell penetration for more dmg. and another Doran's Ring, and that's the core.
Next you should save for the Hextech Revolver, as if the Bountiful Harvest wasn't enough you will now get 12% extra spell vamp to help your survivability, esecially good for solo laning. By this time you would have noticed if the game is going well or not. If it's going well aim for a Mejai's Soulstealer, if not go for Frozen Heart. Rod of Ages is a good choise here since it will with time give you more hp, mana and ap. Now it's time for the heavy stuff Rabadon's Deathcap will do the trick and it will also give you an extra 30%ap, AWESOME! And now finish Will of the Ancients to get more spell vamp and abit of it to help the team. As a finisher you should get Zhonya's Hourglass, meaning 100 more ap, nicenice. and you'll get a nice shield for when you see someone casting a heavy spell att ya.