( this is my 1st guide .. so idk)
Shaco is my the 1st champion that i thought was cool beacuse of his abilities and how u use them to have FUN!
PROS
: decent escape skill
DPS/Carry
FUN!
AOE CC


CONS
: LOW mana
low Hp
Always getting picked on by the other team....

for runes get amor penetration and just mix and match to cover ur weakness

ANd as for the mastery i always get 21-0-9

i always start with to make ( i always start with these because i want my money to start flowing)
then get for
Now your ready to gank.. kinda
then get (for CD and dmg)
for me i always get when i needed it because were losing or ELSE im just gonna stay with avarice and brutalizer for awhile (for the money income)
(now the next items are for diff uses)
high HP Enemmies?
get
Carry filled enemies?
get and
go face them and kill em
AP?

make sure too know what to buy and be smart about it...

now the fun part of the whole thing is playing shaco....
People says that shaco is a jungler and a bad laner.. well its kinda true but shaco can handle it!
JUNGLE SHACO
Same with the items on top
im not really a fan of because its kinda useless on late game
so you start with Blue.. the key here is going early and start planting in the position of the golem.... the problem with this tactic is attack randomly and you might use ignite on the golem to kill it faster before it kills you.
then kill the wolves... REMEMBER ALWAYS PLANT JITB BEFORE ATTACKING....
the kill the wraihts now you have money to buy
now you Can continue farming to get this madred will either going to be a if they have a lot of high hp or simply for better farming.. this covers the JUNgle just rinse and repeat...
LANE SHACO
i prefer shaco not soloing... NEVER ALONE
just as the same start with and when you get 350 go back to get
As for laning..once the game start, grab ur item and run as fast as you can to the side bush and start planting you can probably make about 3-5 JITB before the minion spawns. make sure its not close to the path where the minions walk or all your hard work will go into failure. NOW u wait for a 1st blood..... use both ur summoners skill to get this..MAKE sure ur victim doesn't have or he or she will just fly away and heal or some sort. this doesn't work all the time so dont get frustrated when they get run away or ur JITBs attack a random minion blowing off ur cover and trap.
after this just kill minions and keep planting JITBS.
IF ur low on health and you know that they can tower dive you. put about 3 JITB BEHIND your tower. make sure the JITBS are far apart from each other. you want 3 "fears " as the jump on you. now watch them cry on how tower rape them XD.

NOW REMEMBER: SHACO is a LATE gamer character, early game is where you TRY to farm and get some easy ganks. DOnt try to be RAmbo and tower dive on LVL 3.. its not that worth it

As by now you should have or when ur jungling.
By this time of the game lanes are not organized, people will gank and kill jungle etc. this time you can "explore" and get some kills or assist. you should aim for the low health or aim for a easy kill ( champions with no CC, cant burst you down or doesnt have an escape spell like kog maw or something).
and there you go SHACO!

Always check if they have a JUngler (they will have smite or champions who are commonly junglers like Warwick or lee sin) because you can get a kill early game like this:
Get ur Item and run to the bush close to the wraights(of the opposite team DUH) now plant as many JITBS as possible THe trick here is you will wait for the enemy jungler to walk into the bush and get killed by your JITBs but JITBs are not enough thats where your summoner skills go in....( This might take sometime depending on where the enemy jungler starts, If they have flash, this trick has a low chance of killing them..)

AS all PLayers know (right?!) shaco can evade some skill by using his ult AT THE EXACT TIME but this will take while to get used too so dont get dependent on it.

JITB is like the best "PET" ( not really a pet though) cuz it can be used as a WARD, CC, DMG and Farming tool. SO always use JITB when its not on Cooldown, keep platin it on random places, you'll never know what will happen.

BAckstabing: always try to hit enemies on behind... wait is that even a tip? everyone should know that when ur shaco..

As said before JITB is awesome, always plant one of this babies on a team fight to help ur team with a 1 sec AOE fear.

For killng enemies use this combo: jump on an enemy using

then hit him/her once.. now plant a JITB, then you will fight or he/she will run. if they decided to fight use ur ult to maximize your dmg and by now jitb will pop-out and they will be feared after that they might run , use exhaust and ignite only use when they are too far or use it to last hit them.