Teach Yourself Portuguese: A Complete Course for Beginners by Dr. Manuela Cook offers a comprehensive, 24–25 unit program designed to take learners from zero to intermediate functional proficiency. The course utilizes a four-skill approach covering grammar, vocabulary, and cultural context for both European and Brazilian Portuguese, often packaged with audio materials for listening practice. For more details, visit Teach Yourself US . Portuguese (Teach Yourself) - Amazon.com