Video categories on YouTube range from autos to travel. Click on the video categories and you’ll be brought to a page with videos chosen by YouTube editors. You can watch these, and also use this page as the front door to a further exploration of related videos in specific categories.
Most YouTube categories have sub-categories as well. For example, the Comedy category is broken down into Sketches and Late Night TV. Within each category you can watch particular channels or find videos based on their popularity and community interest.