Youtube is the best mobile app and great platform I have ever seen. this app is essential for mobile, computer, tablet etc.I hope all android and computer user use this app. All qualities of video are available here. This is a very very nice concept. You can also make personal channel, you can show your talent. From youtube you can learnt anything, what you want. this are many things like gain knowledge, all type of video, s, movies etc. all functions and features are very good.It is very usefull app for everyone. So enjoy guys this wonderful platform.