The Document Overview panel allows you to browse the blocks and their order easily.  It also allows you to organize the content exactly how you want.

1. Click the Document Overview icon option to reveal the blocks and their positions.
2. Click the three ellipses to the right of each block to view additional settings.
3. Notice the content arrows.  They are a great feature to organize your content easily.
4. Also of note is the Duplicate feature, which can make it easy to lay out a content page.
   
   

 For a larger image, right-click and select Open Image in New Tab