In this video we explain how to pass information down to your components with variables. 
- Variables have types, which means we can only use match them with properties that have the same type. For example, we can't pass an image variable to a text element.  
- Variables are scoped. This means they are only available inside of the component they were created in.  
- Variables can be chained. If you need to pass values down to nested components, you need to create a sort of chain of variables to do that. 
Variables are also super powerful and there are tons of more advanced use cases that we don't cover here.