Youtube stars are a rage across the world and while you may think you can be one armed with some cool ideas and sleek equipment, there's a lot more to it. So this week, we're teaching you how to become a YouTube star and we're hitting the streets to get some answers. And a lot of you have asked us if the Yu Yunicorn has any cool features, so we decided to play with this smartphone and get you the answers. And if you're a scatterbrain, then we've got a little piece of hardware to help you track your keys, your wallet - and even your pet.