If you want Brazilian Portuguese (Brazil), the Dummies book is a solid start. Brazil is a massive cultural powerhouse, and most learning resources target this variant.
Aqui, o livro aborda os "assustadores" sem muita enrolação: Portugues para dummies pdf
: Mastering nasal sounds (like pão ) and the "sh" sounds. If you want Brazilian Portuguese (Brazil), the Dummies
The book covers the building blocks of the language using a lighthearted, "dummy-friendly" approach: 1. The Basics If you want Brazilian Portuguese (Brazil)