I saw some questions about using WordPress Categories and noticed that the resources were a bit sketchy on how to use them.
I put together this short tutorial for you to learn how to set-up Categories and get them into your menu.
As I was reviewing this, I noticed that in the Edit section I didn't update the page after I changed the categories. You must do this to save your changes.
I hope this makes life easier for you.
Please Like the Tutorial when you are done watching it to help me get feedback.