In todays tech savy world everyone want everything on their fingertips.And best way I find to learn many useful things just sitting at home and alot of entertainment too is you tube app. Best partner during travelling.you can find everything here of your requirement. Study videos , comedy videos, cooking videos, dance videos, singing videos, art and craft videos and a range of others as per requirement of every user.Best about this is we can save videos for later or we can save them offline or even we can download them . We have a option to subscribe if we like any you tube channel and by pressing bell icon we can get notifications whenever any new video is updated on the channel.And all of above you can start your channel and can showcase your talent to the people and earn money through you tube. I find it a very useful app. Even my day starts with it by listening Rajya sabha tv news every morning.It is very easy to use and uaer friendly.