League of Legends Challenges guide and walkthrough | WePC
I made a tool that allows you to find the mathematically correct build for any champion (also includes a Practice Tool simulation where you can attack any champ instead of a dummy) :
How to Find the Best Builds in League of Legends - Mobalytics
League of Legends Builds by Genetic Algorithm - LoLSolved
LoLwiz
League of Legends Builds by Genetic Algorithm - LoLSolved
How to Get an S Rank in Every Game - LeagueFeed
League of Legends Season 3 item shop simulator lets you prepare for the new patch | PCGamesN