The default toolbar in the Finder can be kind of boring, and could lead one to think that there isn't much functionality built into it. On the contrary, there is a lot you can do right from the Finder window. By simply adding a few buttons to it, you can open up a whole new world of functionality.

To add these additional buttons, make sure Finder if your current application then go to View > Customize Toolbar... At this point, you will see a new window appear showing the available buttons:

To add one or more of these buttons, simply drag and drop the ones you want to the Finder toolbar. Below is a sample of the default toolbar as well as a newly designed toolbar:

If you take it too far, and really mess things up, don't worry... there is a way to undo it. At the bottom of the customization screen, there is a default toolbar configuration. Simply drag that area to the toolbar to restore the default settings.