Lee farms well in the jungle if played correctly. When you shield yourself make sure to smite right after you use your shield because it will give you bonus health. Hear is your rotation. . Always start at the bottom of the map. Get a leash on Gromp or the rock creatures. Make sure to smite Gromp for the extra poison damage. and then go straight onto blue. For the other side of the map make sure NOT to smite the rock creatures. Get to lvl 2 after the rock creatures and then go straight to the red buff. Once u are at half health from red make sure to Shield yourself and smite. You will be healed all the way to full if don't correctly. The rest you should easily farm.

Do you want to get real fancy with Lee Sin?
You do well this is the section for you!
At lvl 2 go into the enemy jungle. DO NOT DO THIS UNLESS YOU KNOW WHAT YOUR DOING. Ditermen whether the enemy jungler went red or blue. If the jungler went Blue first go to their red. Camp in the bush behind the red buff and wait for the enemy to come. The enemy will be at least half health by the time they are at red so u will get an easy kill. Please upgrade your Q and E for this (invade). After you kill the enemy jungler and steal his red/blue get out of their.

FOR MY GUIDE YOU SHOULD NOT FALL LATE GAME. I want to make it load and clear that this is not a ******ed guide. I specifically made this build for the begging of the game AND the late.

With smite and flash you will rape by ganking so many lanes. Start by ward jumping then flash behind the target. Ult him. Smite. Q and then e. If your ally team is helping you kill you target he should be dead by now :). If you are ganking bot and you have ult try to kick the adc to your team or into the sup. The double knockup should help kill both the sup and adc. Top and Mid are easy to gank.