This work investigates the acquisition of the pronouns tu and você and other forms of address in Portuguese as a second language, and the acquisition of Brazilians culture as a second culture. It was aimed to identify and characterize general factors (affective and social ones) involved in the acquisition process, to characterize the learning strategies used, to verify the way general factors influence the learning strategies used and to analyse the ways those factors influence on the second culture acquisition. Important masterpieces were used - some that use the socio-educational model of acquisition of a second language, among others that approach the concept of second culture acquisition. With the data provided by this research, it was verified that: (i) a significant part of foreign students who came to Brazil to study presents an integrative motivation; (ii) one of the learning strategies used for foreign students is the interaction with Brazilians; (iii) the positive attitude toward the interaction with Brazilians and the exposition to Brazilian culture helps the language and culture acquisition. On the other hand, the attitude was the major point of this research, just getting a little bit far from the theory used. Even this way, it was possible to notice that the success on Portuguese language acquisition comes together with Brazilian culture acquisition. The research and the results found can help teachers and researches on the elaboration of new pedagogical material and on the improvement of new methodologies for teaching PL2-E.