Hello guys. Today I’m giving review of most popular app in world. Some people thing how can it is most popular app but using YouTube you can learn anything. In now days every thing’s teaching video is available on YouTube. You can watch your favourite movies trailer as well as any Hollywood movies trailer. If you don’t know how to open mobile’s flash light there is video available. Using YouTube we share our knowledge to those people who don’t have knowledge about particular field and they want to learn about particular field. Using YouTube you can share your knowledge to other people and earn money. No one give you money to giving knowledge but YouTube gives. I’m regular user of YouTube.In my opinion this is best app which connects entire world’s best knowledgeable people’s knowledge in just one place.