Olá! I'm in the first steps of learning European Portuguese and I am looking for a book that contains all necessary preparation (theory and practice) for the exam of level A1 / A2 in European Portuguese by Instituto-Camões.
I did not find any indication of books, but I will point you three sites:
They also teach European Portuguese:
Hope this helps.
If you want to learn european portuguese you can start with "Português XXI". We used this book at the university (the 1st year).
I also suggest the book " Gramática átiva 1", in which you can find grammar rules and more exercises.