YOUTUBE is a one of the most sucessfull app or website whatever you say. It is great for watching videos for anything like I need a review video on a mobile phone or anything like laptops, desktops or any electric items so I will go on youtube and search for the review or tutorial. It is also good for uploading videos of our own tutorials, reviews or anytype of video you can upload on youtube. Youtube is one of my favourate app I regularly open it from my desktop or my android phone’s app. And also it has a very good concept and interface and it is one fo the very usefull app I’ve ever use. I can also offline a video for watching later without internet. The features and functions are so amazing the service is also very reliable for me.very very great app easy in use also.