As you can see here, I am currently on a 10 - 2 win/lose ratio with Lee Sin, averaging with a KDA ratio of 6.4/2.6/7.2.

Before you leave this guide, give it one game! Even though it may seem strange, you'll never know unless you try!It really works me wonders and it could change the way you play Lee Sin.

This guide was made for players who want to win in 1200 + games, not a high elo guide. It's inspired by cruzerthebruzer, waiting for an update on his guide ^^.

Leave feedback? I really want to know if this guide went well for you!

Since the item build is rather damage, you'd want to get defense masteries; It really helps in lane and in teamfights.

Standard AD carry runes, works well on Lee Sin as well. The AD does more than you think; Lee Sin has a high base AD.

Flash Ignite has been a popular pickup for a long time, it makes sense to get them since they are very strong.

Maxing shield first was never in mind to me, I saw cruzerthebruzer's guide and tried it, it works wonders. The shield blocks more than you think, your lane opponent will underestimate this first maxed.

Due to the Season 3 patch, bruisers are more built damage than tanky, which makes it hard(er) to position and should require more skill. The damage on these items work great on Lee Sin, even late game. Black Cleaver is getting nerfed, but it's still worth it.
For starting items, if you think you can get an early kill with , it'd go smoothly for your lane.
Things that can help:
Blue side: Take some wolves exp from your jungler.
Purple Side: Do wraiths
The quicker level 2 advantage will almost guarantee you a FB/Kill.
Don't be afraid to use / , the jungler won't clear fast enough to gank you.

EDIT: HP Pots nerfed to 5 at a time.

Just watch for enemy ganks and try to farm better than your opponent.
Harassing with at low levels throw off your opponent.
You can even get off an AA or 2 and still deal more damage taken, due to your masteries.
If you excel at skill shots, use a simple / combo to harass.
can be used to freeze lanes, as well as

Around level 9-12 or so is when you can harass without taking damage. Due to his mobility level, you can wreck your opponent and still contain your CS. Mid game Lee Sin is horrifying, use this advantage and sh*t on your opponent. Early game should've been easy for this to apply. Late game goes with the Team Fight chapter.

Your goal is to take down the most fed one on the team, mostly being the mid lane or AD. Lee Sin counters all stealths and is a good follow up to the initiator, or can even be the initiator. Taking down the mid lane or AD can be great if you land that Resonating Strike; The armor pen deals TONS OF DAMAGE!