You're welcome, I'm glad if I was able to be of assistance.
Don't worry about silly questions. We're always happy to help.
Some Arduino pins do have special properties so there are certain applications where you are restricted in which pins you can use. For example, analogWrite() only works on pins 3, 5, 6, 9, 10, and 11 on your Nano. But often you can use pretty much any pin you like.