Well this is my first guide, so please rate it.

Spells.The best spells for Shaco is Ignite and Smite.You don't need flash!Cause your Q is making flash job and make's u invisible :).
Also,you can get these Ghost and Smite if you feel brave.

Another option is to get Flash and Smite if u are begginer in playing Shaco.

First,go to Blue Buff.Around min.1 put boxes.Call your comrades to defend you, cause if enemy team wantt to invade,u have time to run.
After you get Blue Buff and Wolves go to Red Buff.Take it,and then go to Wraiths.On lvl 3 you can gank top/mid.If u don't have a noob team,you can do a double kill(or first blood).
On lvl 6,go to dragon.Get it SOLO,Put a box,Hallucinate and BOOM!Solo dragon :).
After these,farm,kill and most important DON'T DIE!!!

First,get Hunter's Machete and Health potions.Use it WISELY,cause on first Recall,you need to get Avarice Blade and Madred's Razors.If u have more gold,buy Boots.
After you have around 2100 gold,Recall,and buy Statikk Shiv and Wriggle's Lantern,and Berserke's greaves.These items gives you all what u need:

Attack Speed

Movement Speed

And Life steal

Next,if u doing well and have some kills/minions/gold,go buy Infinity Edge and Ravenous Hydra.

Pros

Very good jungler. If is feeded, deals a lot of damage. Have a flash with invisibility Deceive What the hell, IS FUN!!!

Cons Squishy Easy to counter Is often first targeted

These are my runes.These runes gives you attack damage and resist.Normal runes.

Item sequence

Teamwork is essential when playing with Shaco. Cause if your team dosen't like you,you will guaranteed loose game.Your team have to protect you cause you do a lot of damage.So make your team to like you, to help you and you will win

Final,Shaco is a good champion if u know to play with him.
Thanks for watching me and good luck.