Hi Jose and welcome to expat forum.
There is a lot of advice on kids/teenagers moving to Portugal and will they adapt.
All you have to do is look through the SEARCH facility.
You have given very little information on what exactly you are looking into about the Fatima area. Is there a specific reason that you have chosen there?
There are many people living in that region and I am sure could offer you advice.
There are also several members who have moved here from South Africa.
Let us know a little bit more about you and I am sure someone will respond.
Is your 13 year old the eldest? with a name like Jose have you got a Portuguese background?