1st of all this is a personal guide I use when I'm playing with Wukong. It is quite different from all these other guides that say wukong is an excellent tanky/dps monkey.. I say that Wukong is an excellent Dps monkey, so I try to build on that. Hope u play well!!

-Skills
i)Crushing blow
I choose to upgrade this skill 1st cuz it gives bonus attack dmg and reduces the enemy's armor, so it's a very effective skill to use early in fights

ii) Decoy
A great enemy-confusing skill. It is very well combined with "s" for stop, or using it right after nimbus strike for some extra dmg

iii) Nimbus strike
A very good blink strike kind of skill. Deals pretty good dmg and u reduces cd as u upgrade it.

iv)Cyclone
Awsome ulti for an awsome champ!! No need for words, but it's also an amazing early fight skill since it throws the enemys in the air like little monkeys xD

This is a very standard build I use for almost every AD dps champ. Start with a dagger and a red pot. After that u will only need 500gold for berserk shoes, which is a great advantage early in the game. After that u should get a phantom for extra attack speed and crit %, and then build for damage. I couldn't find a better 6th item other than the frozen mallet cuz of the slow effect

I'm not so sure about this rune build, however I think it's very helpful throughout the game...

For summoner spells I use the classic flash + ignite

EARLY GAME
Try to be as agressive as possible early in the game. If u are on the lane with another champ that has stun, try using this combo at lvl. 1 : attack-crushing blow-attack, cuz crushing blow resets attack timer. At level 3 try confusing ur enemies a bit by using nimbus strike and immidiatly after that decoy. Just don't move, and ur enemies will take the decoy + nimbus strike dmg.

MID GAME
Wukong excels at team fights and ganks. The skill order for team fights or any ganks are : Nimbus strike-Cyclone-Decoy-crushing blow and attack.. after that u should probably back off a bit and come back when ur skills cd is over.

LATE GAME
Almost same thing as Mid game however now that u have frozen mallet and more HP, u should stay at fights longer... by now u should have enough attack to kill any non-tank champ with 5-6 hits (+ crushing blow).

I've mentioned some of those tips before but this is a sum-up

i) Decoy is best used after immidiatly after Nimbus strike "e" or after pressing "s" to stop so that ur enemies don't see where ur going. ALSO VERY IMPORTANT : I've learned this from some personal mistakes.. When u use decoy after "s" in order to get away from a chase, NEVER use the most common way... The other champs will be 95% sure about the way u chose so since this is also a great escaping skill, u should use it carefully

ii)Remember using crushing blow while hitting turrets for extra dmg

iii) Start with Cyclone in team fights

iv) PLAY TO HAVE FUN :D