DO PORTUGUESE PEOPLE UNDERSTAND BRAZILIAN ACCENTS?
Yes, they do! It is because there are a lot of Brazilians living in Portugal and Brazilian media has an important presence there. Actually, Portuguese people can understand Brazilian accents more than Brazilians can understand Portuguese accents.
SO... I CAN STUDY BRAZILIAN PORTUGUESE TO USE IT IN PORTUGAL, ISN'T IT?
Yes, you can! Wherever country speaks Portuguese, people would understand you, because Brazilian Portuguese is the most influential.