The basic idea behind this build is to maximize early game harass while building for reduced ability cool down mid to late game.

9 Marks of Alacrity give a nice boost to your auto attack for early game harass.

9 Seals of Resilience provide early game survivabily with ~ +12 Armor.

9 Glyphs of Clarity give good scaling mana regeneration throughout the game.

1 Quintessence of Avarice combined with 4 points in Greed give you +3 Gold per 10 from the start.

2 Quintessences of Swiftness combined with 2 points in Swiftness give you 4% increased movement which helps with early game harass and late game mobility.

9 points in Defense provide early game survivability with +30 HP and an additional +6 Armor (~ 18 Armor with Seals). Your Summoner Heal also gets a 10% boost.

21 points in Utility supports the goals of early game harass and reduced ability cool down mid to late game. I struck a 2 point balance between Swiftness and Meditation to give a full percentage point to movement speed while maintaing +2 mana regeneration. 4 points in Awareness along with Sage ensures you stay on pace with your opponents. 3 points in Intelligence combined with Mastermind gives you early coold down reduction on your abilities and Summoner spells.

While your Runes and Masteries provide your early game harass and survivability, your items are about achieving mid to late game reduced ability cool down. The start is pretty straight forward with Fairie Charm for a slight boost in mana regeneration, 2 Health Potions, and 2 Sight Wards to prevent early ganks.

Before you start building cool down reduction, build Philosopher's Stone and Heart of Gold get your gold production going. With these two items, 1 Quintessence of Avarice, and 4 points in Greed you will have +13 Gold per 10 to excellerate your build.

As you enter the mid game you want to grab your first Fiendish Codex and complete your Ionian Boots of Lucidity. Next you want to complete Morello's Evil Tome, grab your second Fiendish Codex, and grab Kindlegem on your way to Shurelya's Reverie.

For the end game, complete Gnashor's Tooth, which will combine with your other items and Masteries for ~ 66% reduced ability cool down. Finish with Emblem of Valor on your way to Locket of the Iron Solari for some late game survivability and a nifty little shield for you and your team.

With this build complete you should notice you have one open slot. This open slot is to allow you to continue to purchase wards for your team or provide the item flexibility you may need to counter your opponents.

The priority is Glitterlance > Wild Growth > Help, Pix > Whimsy.

Going with Glitterlance first helps your early game harass with the potential to slow two enemy champions as you learn to master pointing two ability arrows. Also, with 3 points into Glitterlance by level 5 combined with the 9 Alacrity Runes boosting your auto attack, you actually have some nice damage output to aide your harass and set your laning partner up for the killing blow.

Wild Growth is a game changer in team fights. Not only does it do a knock up on enemy champions but it also provides and AOE slow. There's nothing like Alistar initiating a team fight with his own AOE knock up, then to follow up with Wild Growth on him knocking up all the enemies near him again, simultaneously slowing their movement speed, but the fact that Alistar is now HUMONGEOUS makes it so much fun.

Help, Pix is one of the most versitile abilities in the game. A straight forward approach with Help, Pix is to provide a shield to yourself or laning to partner to help with survivability or as slight burst of damage to an enemy champion or minion. The beauty of Help, Pix comes in conjunction with Glitterlance. You can put Help, Pix on any minion (yours or there's) effectively increasing the range of Glitterlance as Pix is the source of one of the two arrows for this ability. I've been able to finish off low health champions under their turret by using Help, Pix on one of my minions followed by a well aim Glitterlance as my minion approacher their turret.

Whimsy is a great ability too, worthy of being leveled before Help, Pix, but in this build Whimsy is maxed last. While Whimsy can transform an enemy champion into a tiny creature, effectively removing them from a team fight or allowing you to escape, late game Whimsy combined with your reduced ability cool down can have you zooming all over the map to support your team.

In summary, I've had more fun with Lulu this first week than any other champion when they were released. She has so much flexibility and all of her abilities can be used to aide in multiple situations.

I am looking for feedback, but since this is my first published guide, please be gentle. :-)