In this free time you have to film the videos, edit them, and upload them to your YouTube channel. You can choose a name for your video, the image it will display, the type of video, and also some other basic characteristics. Once you upload your first videos, you can start making money with ads, even though it won't be easy to create a channel popular enough to make large amounts of money. When this happens, you can start buying better cameras and editing software, and also take special courses.
TubeStar is a very comprehensive youtuber simulator that, despite not having particularly good graphics, still offers an entertaining gameplay.