Complete Guide for Youtube - To mp3 & mp4

Guide for Youtube
I made this guide for my interests and share experiences with others.

My apps has some tips such as:
+ How to Use Youtube
+ Youtube app tip
+ Basic iOS Youtube Tutorial
+ YouTube iOS App Removes Apple’s Obtrusive Volume Indicator in New Update
+ ...
If you have anyproblem about the application, please contact me at: [email protected]