Boombox GTS Nav system.

[Rugged Path]

Albeit I can put in UK addresses and it will lead me there, I also want to get the benefit abroad.
1. Regarding GPS coordinates, I seem to be inputting them wrong. For example; a campsite in Granada, Spain (36° 09' 39" N / -3° 27' 58" E).
How can it be inputted for the Sat Nav to understand?
2. I would also imagine with French, Portuguese and Spanish campsite addresses, there must be a protocol on how you input them.
Would it be a road, number, town and then code sequence?

Thanks.