BEST LANGUAGE LEARNING APP?

Books to use for self-study:

French

• Grammaire progressive du francais ➝ Link Here
• Grammaire Progressive Du Francais: Avec 600 Exercices (French Edition) ➝ Link Here

Brazilian Portuguese

• Gramatica Ativa - Versao Brasileira: Book 1 (Brazilian Version) + CD (3) (Portuguese Edition) ➝ Link Here
• Novo Avenida Brasil 1 (Portuguese Edition) ➝ Link Here
• Novo Avenida Brasil 2 (Portuguese Edition) ➝ Link Here
• Novo Avenida Brasil 3 ➝ Link Here

Mandarin Chinese

• Communicating in Chinese: Reading and Writing ➝ Link Here

• Communicating in Chinese: Listening and Speaking: Student's Book for Listening and Speaking ➝ Link Here