Diablo 3

Show FPS
Show Frames Per Second (FPS) Ctrl+R

Skill Calculator
Game Guide - Diablo III - http://us.battle.net/d3/en/calculator/

Game Guide
Game Guide - Diablo III - http://us.battle.net/d3/en/game/
 * Skill Progression (Witch Doctor) - http://us.battle.net/d3/en/class/witch-doctor/progression