You wanna go to your blue (if possible) or enemy's blue if they don't have a jungler. Set up about 4-6 boxes about a little distance from blue buff. Leash blue into your boxes and let the blue focus you so your boxes won't die. If you wanna be mean, leave 1 of the lizard elders or if you wanna level up take them all out. Go back to your lane and just set down boxes to attack the enemy waves and harrass with your E, shiv. Always make sure you have one box on each side where you could see a possible gank so you don't need to buy wards. When killing an enemy champ you always wanna deceive behind them and get the bonus damage from your passive. Right when you land your first basic attack from deceive place a box where you think they might retreat and then shiv and basic attack some more. Ignite if necessary. Always use your shiv when its up since you have blue and can regain the mana back.

You should have your three items, Deathfires grasp, sorcerers shoes and mejais. Use df grasps's active to get you more kills. If you're having trouble getting those mejais stacks then just get them off of assist and try not to die. If you're having trouble being squishy and dying a lot then get an abyssal scepter or haunting guise but then sell it late game for your main build. At this point, start ganking and helping out the lanes. If you haven't gotten the enemy team's turret out then ask your friendly AD carry for help. Don't forget to spend some time to get blue buff. If you're on a killing streak and think you can't die then get an oracles to destroy vision wards. If you can't get those mejai stacks then sell it for a rabadons.

Well, its really simple. Just keep on what you're doing and take out inhibs and stuff sooooooooooooooo yeeeeeeaaaaaaaaaaaahhhhhhh

Lol rhyming aint my thing.

Anyways, One trick the shaco has is that you can stack boxes in one spot in a brush and use your ulti to bait enemies into your boxes. With Alt+right click you can move your clone but not yourself.

A nice little tip is that you can place a box or shiv when you are in deceive and you can still have the crit when you basic attack a few seconds after you're out of stealth from deceive.

Use your boxes to get out of chases or block an enemy's path

Use your clone so that the enemy focuses it and you can get behind them and deal more damage from your passive.

Your shiv hurts a LOT

When your clone does a lot of damage you can send it in to steal baron or dragon when it explodes.

Always stack your boxes in one spot when you have the chance and bait enemies into it.

Pros
-Good stealth champion and ganks really well
-Does a significant amount of damage
-Jungles really well
-A lot of tricks you could use with shaco to kill people
-Can solo lane really well if has blue
Cons
-Squishy
-Oracles and vision wards counter him
-Runs out of mana really fast

Have fun with shaco. Hope my build worked out for you. Check out my AP shaco jungle guide