This is my first guide, and since I've been playing a lot of Gangplank I decided to go with him. He was actually the first champion I ever played, back in Beta, because who doesn't love a pirate?

I've seen other guides that suggest using Sheen. With my build, the primary focus is dealing damage using Parrrley, which is not benefited by Sheen's proc. I tested this by buying a Sheen and engaging the dragon. I used Remove Scurvy to gain Sheen's buff and attacked the dragon with Parrrley. The Sheen buff was consumed when I did this. I then waited for Parrley's cooldown and used it again without using any other skills. Parrrley did exactly the same damage with and without Sheen.

To start off I buy Brawler's Gloves and a mana and health pot. If you are lucky enough to be laning with Soraka you can buy two health pots. This build is quite expensive and as such, requires very efficient farming. When you've earned enough gold or (hopefully not) are forced from your lane build an Avarice Blade followed by Boots of Speed. Your next item will be The Brutalizer giving you AD, CR, and ArP and building into Youmuu's Ghostblade later on. Buy a Last Whisper ASAP because it will increase your damage output tremendously.

I'm still not entirely sold on the Manamune. The extra mana regen and bonus AD is nice, but in all honesty the slot will probably be better used with a Banshee's Veil. Whatever you decide to buy at this point, it's a good chance to add some utility. You can now upgrade your boots as well. If you choose a route other than Ionian Boots of Lucidity you will need another source of CR. Finally you can buy your B.F. Sword, upgrade to a Youmuu's Ghostblade, and work on finishing the Infinity Edge. The Phantom Dancer is certainly a good item for Gangplank, but this can also be replaced with any survivability or utility item depending on the state of the game.

Building these items will maximize the damage of Parrrley by focusing on AD and ArP, while bringing your CR just over the 40% cap.

Although I haven't done much testing on how other runes may be more effective, you can feel pretty safe with ArP Marks, Mp5 per level Seals, and CR Glyphs. The single Greater Quintessence of Focus is necessary to cap your CR, but the other two could be health or ArP, it's personal preference/availability.

My masteries are 21/0/9 with the intention of doing the most damage possible.

Early game: Assuming you are playing in a solo queue unranked match, try to lane with a support or magic damage dealer. Taking Remove Scurvy or Raise Morale at level 2 is going to be your choice. Raise Morale can help get that first blood, but Remove Scurvy may stop the other team from doing it. Don't be afraid to use your Exhaust. Farm, farm, farm, and farm. Last hitting with Parrrley leads to a lot of gold, but missing the last hit runs you out of mana with no gains.

Mid game: Be very aware of the other lanes. A well placed/timed Cannon Barrage can swing the lane in your team's favor. Remove Scurvy breaks you out of all crowd controls, so those Ashe Arrows aren't so scary, but you're still a squishy bearded man. Keep farming

Late game: Team fights are going mean a lot of poking for you. Keep your team buffed with Raise Morale, and poke with Parrrley any chance you get... it hurts. You are certainly capable of venturing into the jungle and grabbing the other team's buffs, as long as you have vision on them.