There is Nothing in the UE4 Content Brower?

Just started using UE4. There used to be stuff in the browser. I just finished messing around in a SCL in UE4 and now I went to start the tutorial. When I began nothing was in the Browser. I checked my file folders (while still in UE4) and All folders were there, but files were not. Can someone help?

I am guessing you either accidently deleted them, or updated your project from a previous version which also may have deleted them. you can either go into your Library from the Epic games launcher and add them to your project, or (since you just started and are doing tuorials) start a new project and choose to add those to it.