Here's another video specifically for beginners, because I think a lot of people new to the sport just hop on and don't realize there are things you can do to make riding easier and more enjoyable.
Adjusting the handlebars is like adjusting the seat of your car, because not only is it fairly easy, but also necessary for safe operation. In this video, I explain a few tips I've learned over the years and the way I like to set up my handlebars.