Not Updated For Current Season
You want boots or long swords as first items. from there get your adept boots, or get your brutalizer. from there get your avrice blade if you got boots or boots if you have the brutalizer. then get x1 zeal. from there get your Youmuu Ghostblade. this is good for your crit chance and get away or killing.
Get your phantom dancer x2.
Get your Infinity Edge, either Get preceding item BF or cloak of agility then finish it.
By this time you might be squishy so time for a warmog/sunfire cap/force of nature depending on their team.
Then decide if they are to tanky or not and you mihgt wanna get your Mandreds Blood Razors.
Ok i find that getting your cdr mastery along with mag pen helps you verses certain tanks or to kill more squishy ppl. umm Burning embers is a possiblilty but diff not recommended because your shaco wont be ap, so best bet is to have Cripple. and get alacrity cause atack speed will be needed in early ganks.
3/3 hardiness is good for early ganks os incase they go bad lol.
umm 3/3 on Preseverence is good for staying in lane and ganking and 1/1 in Haste is good for maximium use on Ghost.
Well many ways, all works but i like JITB's cause they rock golem if i need it in the beginning. but E is good for farming or for ganking early and decieve is good for getting away or killing much easier. usually wanna max out your 2-shiv cause its more effective early the higher it is. also decieve decreases in mana cost the higher th lvl so its good for saving mp which is always a plus on shaco. But if you have Golem it wouldt matter hwat lvl your skills are cuz golem keeps mp up 100% at all times. and JITB's are most important to not getting ganked/killed and way important if you plant 5 in the same bush and say a squishy twitch comes in to gank you LOL. 3 boxes down and i Killed a lvl 1 twitch no prob and then i killed a ashe 2 seconds later because of those JITB (i was alone with the JITB solo top ftw).
Umm Exhaust + ghost is good for quicky ganks.
Ignite+ ghost is a good guarentee if you can keep him slowed.
flash+ghost is the ganker/run away shaco also know as the Deciever.
flash exhaust is good for gank and also for get away but slower tho.
ignite exhaust is good for straight dps and making sure you kill me with no speed or extra get-away.
cleanse + ghost is good for heavy CC teams.
My fav is exhuast and ghost + ignite + ghost right behind it as my second fav. both works well with diff styles of play.