How To Make These Changes To Checkout

Hi chaps

When the checkout first loads its showing a message that would be displayed if someone enters an unavailable location - which is confusing to customers. The red text


Is there anyway I can change this message to something more instructional.

Also, can I change the word "State" to "County". How would I do that?

At first, try to set up default address in the checkout settings

Label text can be changed in the language variables

admin>texts&languages> edit texts

type "select state" change to what you want