Lee is atm one of best junglers in game imo :)

Lee doesnt use mana, lee got energy.
Lee can cast all his abilitys expect ulti two times.

Pros
- Lee is tanky
- Deals tons of damage
- Funny to play
- Easy farming


Cons
- Needs few kills @early game
- Skillshot based ganking
- Might be bit hard to play at beginning

You need to learn use Lee's passive Flurry so you dont run out of energy
So you need just use ability and do 2 basic attacks before use ability again that is simple ;)

In jungle lee starts with red, after red take golems, wraths wolfs and blue, give second blue to mid always. Jungling with lee is pretty easy you should'nt have problems in farming. I always go 1st time base after i get 900 gold

GANKING
Ganking with lee is bit skillshot based, there is few nice tricks to do with lee

1st is just basic run out of bush and Sonic Wave Enemy and then slow with Tempest,

2st is Safeguard to near ally and slow enemy with Tempest

When you open your Dragon's Rage you can attempt funny ticks with that knock back, like kicking them out of their turret and stuff.

I use ''basic'' ad offtank runes for lee sin good runes look like this

I like to use 21/9