Simple question about default category

[magento532]

New to Magento - started with Magento 2.0 - this question may be too basic but I'm confused.  Under the column categories:

Default Category/Books|Default Category/Fiction Books/

Default Category/Videos

Do I need the title "Default Category" in my first import - no categories are entered in magento admin - starting fresh with csv file...want my site to look like this example - these would be my main categories - of course I would have sub categories...

Books

Videos

Electronics

Grocery

Toys

or do I leave the title 'Default Category" out?

* BTW, the new PDF instructions are excellent - makes my life a ton better

[magento532]

To answer my own question for someone who might not understand and has the same question...yes, you want Default Category in if you want your category to be a sub category off the root.  If you want the category to be a root category then don't use Default Category.  Hope this helps