We understand your trip to South America is quite a challenge. A bit frightening as well, don’t you agree? That is why we will answer all your personal questions. On our site, you can find some relevant information, but do not hesitate to contact us for further information.
Under the various headings you can find brief information about practical matters. The expenses for a stay in Bolivia and Brazil are roughly described, as are the various options for accommodation and the possible conditions that Beyond South America proposes to volunteers/interns. It also describes how you can register.
One tip: buy a good guide book, for instance the Lonely Planet.