The process of downloading videos from the internet on the mobile is a tough one ,but with the new app , Youtube Go ,this process will become way easier.
The new application is designed so that page loads and video playback can be made as fast as possible, including weak or even offline connections.
The app was launched some time ago in India,but it began to be available in many other parts of the world.
The downloaded videos can be sent to friends via Bluetooth or WiFi Direct - two connections that are made directly between phones and do not need an internet connection to work.
https://play.google.com/store/apps/details?id=com.google.android.apps.youtube.mango&hl=ro