If You cant follow the video just read this:
Step1. Download your S4 setup
Step2. Go to alaplaya folder then pick S4
Step3. Open the Patcher (always open patcher)
Even if theres no patch just open Patcher and nothing els.
Step4. Click Start And Play S4
Step5. Go to
http://www.youtube.com/exforcefire and click subcribe XD
(less info)