Skills
Mkay i know many of u gonna feel weird about the runes at first, u gonna be like o.O wtf 7/2 , 7/2..
ill explain, as many of u know shaco been op in the start of the games and useless on late game (as many would say),So the point that i used crit & dmg are for 2 reasons. Deceive skill ownage & simple hits (+ull get from runes) will destroy the enemie easy in first lvl's since shaco is one of the best gankers.
Lets talk about the skills :

(Innate): Shaco deals 20% bonus damage when striking a unit from behind with his autoattacks or abilities.
This passive is like godlike,if u use it well, i mean when u use
Hallucinate get ur clone at the back of ur enemie and deal tones of dmg.

(Active): Shaco instantly blinks to a target nearby location and enters stealth for up to 3.5 seconds. His next auto-attack in the next 6 seconds will critically strike with modified critical damage (normal critical strikes are 200% damage), dealing physical damage and ending his stealth.
Critical Strike Damage: 140 / 160 / 180 / 200 / 220%
Thats where u should focus, as u see the crit dmg of the skills its like omg. with the runes build i showed up,++ also notice the blue color line, thats the reason im focusing on crit. / dmg runes, with few words what im trying to explain is CRIT. & AUTO hits owns
(Active): Shaco creates a Jack in the Box at the target location with 150 health. It will stealth after 2 seconds and trigger when an enemy comes near, fearing nearby enemies briefly and attacking them. It deals magic damage, and lasts 60 seconds stealthed or 5 seconds while firing. Casting Jack In The Box breaks stealth.
One of the best skills imo. Train ur skills on shaco by trying to combo with boxes. always leave one box behind on ur bush when ur starting a gank. And something u should notice, many ppl leave like 2-3 boxes while they are ad, its pointless... u waste ur mana + wont do any difference, just always place 1 for single targets 1-2 for mass, but place them on differend places not in the same.
Passive): Shaco's attacks poison his targets, reducing their movement speed for 2 seconds. It also gives affected non-champion units a chance to miss their attacks.
Slow: 20 / 22.5 / 25 / 27.5 / 30%
Miss Chance to Non-Champion Units: 20 / 22.5 / 25 / 27.5 / 30%
(Active): Shaco throws a dagger to target enemy dealing magic damage and applying his slowing poison to them for 3 seconds. The passive is deactivated during the cooldown.
There are two ways that u could use this skill, when the target aint got any chance to escape so u go like '' Two-ShivPoison, Decieve, hits '' or when the target do have chances to escape so u go like '' Decieve , Two-ShivPosion , Ulti , hits '' , dont try to focus with this skill on dmging enemies, try to use it as a cause-death skill leaving them no way to escape cause of its slow.
(Active): Shaco stealths for half a second and creates a clone of himself next to him that will last for up 18 seconds. The clone deals 75% of Shaco's damage and receives 50% extra damage. This clone deals 50% damage to towers and inhibitors. At the end of its duration or when dying the clone will explode dealing magic damage to nearby enemies.
The smartest ulti of LoL xD With the build ive shown makes ur clone more importand on killing and not tricking.Many of u use the clone to avoid death more than killing :P
When u use it to kill : when u are 1v1 or 2v2 Use ulti get ur clone to the back of ur enemies (For the one that aint know yet ''Alt + Left click u can move ur clone'') , so bring ur clone at the back of ur enemie and u do ++ dmg + the dmg u give from the back :P
When u facing more than 1 enemies, send ur clone to a differend target.. ur a big source of dmg so ull get low more than 1 enemies if u aint kill them.
Jungle
At first i wanna let u know that : Wraiths & Wolfs have 1 minute respawn, Red Buff and Blue Buff got 5 minutes respawn , Dragon got 6 minutes respawn ( Always watch ur clock after u kill it so u can know when its gonna respawn again exacly) Baron got 7 minutes respawn.
How to Jungle:
White line : Shows a way u should get, u notice that im doing the first jungle at lvl 2, its because
Shaco can deal tones of dmg in first lvl's
Blue Circle : Leave 1 box there and start with Wolves (ask for ur team mate to hlp u out a bit )
Red Circle : after wolves move to blue , (Immprtand: before u start place 2 boxes, Move to blue simple hit it and move back to ur boxes and w8 it there to come, then slain it by using smite)
At the bot : as u can see there are two ways .. way #1 and way #2, the #1 is meant to be if there is a ward in the #2 way bushes, u can choose by hows the bot lane doing.
How to Get First kill in lvl 1 ( if u like so ) :
White way, is urs , Purple one is of ur enemie. follow the white line and w8 into the enemie bush, place 5 boxes ( always spawn new one when they end ). W8 for the enemie to come and kill
NOTE: I just wanna let u know that u might lose a lot exp (+ U may fail killing him)
Its good here for u to know that it can be usefull
Ignite instead of
Ghost To do this one u need to be an experianced players so u can be able to join back the game if u fail the first kill.
Stealing jungle :
Black way shows how u should go, while ur enemies gets his blue, u get his red and then u move to mid so u can gank lvl 2.
How to use :
HOW to USE shaco
: kk at first ur not Rambo or Rocky or Irelia to jump into 5 enemies and try to kill em all XD u just sneak and kill, ALWAYS get the squishy targets first focusing of them. Before u jump in the fight leave into the bushes some
Jack In The Box so u can escape by those if some1 chase u cause they owned ur team :P (Plus ping and let ur team know where ur boxes are). U should do as many ganks as u can starting on lvl 2 or lvl 3 (depends on how u know to use shaco and ur exp on him ) Dont forget always to leave 1 box behind.
Main goal ,
Shaco Work is :
ur goal is to hide until the massfight starts and when it does u jump into the squishy dd , support w/e and own it in secs. Dont ever jump fisrt as i said before in tf.
I hope i hlped. Hf and tc :)