Lee Sin Build
Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Be sure to go mid. Once mid, be sure to kill your opposing bot many times. Once you reach level 3 and kill your opponent bot, roam to another lane to kill those bots too. By 10 minutes you should have around 6 kills. Be sure to practice your insec moves to master the bot destruction.
Once you have taken the first and second towers, the rest of your bots will assemble (news team style) and you will be able to siege mid together. Usually this is when I leave them all to die in order to split push and destroy the outer lanes. Most of the time you'll be able to get an inhib by yourself while your team dies mid.