I am using Youtube from last 8 years as I can tell you that youtube is a execellent app which everybody should have in their phones, as it is very useful for any propose either for teaching, Learning, inhancing talent in any field such as studying, crafting, painting, dancing, recycling of things, in regards of entertainment, you can find everybit of things on youtube as well as I would like to tell you that two years back I was teaching a kid Of sixth standard and he got a homework of making an seasaw from icecream sticks I was not able to make it then I took the help of youtube there were many videos through which I made it, it is also very useful for knowing how we do banking transactions in different banks every banks puts their videos on youtube . I short I can YOUTUBE = EVERYTHING YOU WANT