АДКАЗАЦЬ - English

Hey,
I need to know more about the scottish gaelic for my work. I have to manage the location in english but also in scottish gaelic.

• It's used fluently in Scotland? to describe a location?
• What is the difference with the english?
• I heard about characters which are differents than the english one, is it just about accent or there is new characters? How do you key-in them on the keyboard?

Thank for your help.

Goofy