This is my first guide :D
hope you'll like it leave comments below!

JustThief

Beginning Part 1/1 at side lanes :
always keep an eye on your life!
dont try to hunt FB!
farm and stack spells with "Q"!
dont be to agressive!
farming is more important than killing!
stay on your lane as long as you can!
dont head to other lanes for a gank!
youre stun is very usefull but in a cool laning situation go and cast on just 5 spells for next stun ;D


Beginning Part 2/2 at side lanes: (LV 6.)
always keep an eye on your life!
you now got tibbers so use him!
try to get kills but no suicide ones!
if an enemy gets away w/ low life he's lucky!
if he stays at tower you've enough life and your minions tank it you "can" kill him.
if he heads to his base, no minions tanking tower or you got low life forget it.
u can use tibbers to tank towers but he's a farming machine so watch what is worth more.
stay on your lane and farm!
always keep an eye on the minimap and the chat to be save for ganks!


Mid Game at side lanes (LV 8. - 11.)
you may now go out for ganks!
be an assasin!
try to surprise enemys and take them down as fast as possible!
choose your victims wisely!
manage ganks with your team (not just pinging thats annoying and tells your team nothing)!
you may now get the blue buff ask your team for help if you dont get him alone!
the shield is very powerfull against the golem!
you can solo push lanes now but keep an eye on the m-map and chat ;D
same for End game
P.S. try to end game fast

More for GamePlay below at Tips&Tricks.

Annie:
run offense into bushes so that your enemys see it and when they come take'em down^^
later kepp your stun stack at 4 so enemys dont see the white gel arround you before attacking them cast your shield to get the stun rdy!
its also good to keep stack at 4 for enemys with a banshee's take theire shield down with "Q" and then take'em down
a tricky problem is the range and time of hitting the the target from the spells "Q" & "W" because the spell that stuns is not the spell that were cast first but the spell which is the first one hitting an enemy target.
for example:
you cast "Q" on an enemy target and you cast "W" before your fireball reaches his target the stunning spell is the "W"!
make sure that you know this

Tibbers:
Tibbers is a farming machine so decide if its worth tolet him tank a tower and let him die!
hes has an SC effect so running next to a enemy let them loose life as well, good for running lowlife enemys!
use him to scout bushs!
summoning him makes hard AoE dmg!
in team fights, when you use him as a stun, wait for the enemys to get in a group so you're able to stun as many enemys as possible.


while knowing this tricks you should go easier through the game!

For the start you should pick the saphire crystal to increase your maximum mana cause you have to stay at lane for a long time.

Now its your decision if you pick the shoes or the catalyst first for myself i use the shoes if my enemys are more skillshots but right as i said its your decision ;D

at +/- 20:00 your RoA and shoes should be there but if you can get the RoA earlier without losing a tower get it because as you should know it stacks with time.

you should really try to get the Deathcap as fast as possible to kepp your dmg up.

in the mid phase there will be some enemys who you wont nuke down in a few sec's so its important to get the rylais to kepp your enemys from running.
(try to get the belt first)

now you have to take a few decisions for the last 2 items he're a few opportunities:

if you have problems with the magic tanks of the enemy team you should really get the void staff it's powerfull as hell and you denied a lot of theire money.

in some games you have to siege the enemys base you'll lose alot of mana if you stay there for a while the archangel staff is very usefull in those situations and dont be shy to cast whenever your CD's are down cause it stacks with spells.

if you have some enemys who do alot of dmg with theire auto-hits like: yi, teemo, twitch, ashe... get the Thornmail it gives you alot of armor and it's passive works perfectly with the molten shield you will see they'll kill theyreself's ;D
but be sure that they dont use an AP Build ^^

often the enemys team will focus you in teamfights directly to get outta a instant dead get zhonyas HG.

Abyssal Scepter is what i normally get because it gives you AP aswell.


That's it for the Items :D

I think I don't really have to explain the runes of course you can mix it up a bit some players may take AP for the quintessence's of course you can do it but you have to play verry defensive untill you reach lvl 6.

for summoner spells i choose Ignite and Flash.

You may also take Ghost in case of Flash or Exhaust in case of Ignite

in the beginning farm w/ "Q"
then solo laning

No good idea ;D