Their annually updated pages contain a short description of the country and useful information about safety, crime rate, health services and insurance. Aimed at U.S. citizens, but useful for anybody. Go directly to their Sao Tome and Principe Page . You won't find too much information, but they have detailed maps of the country. This is a good, informative and well organised site.
Guides exist to all countries.
You might want to go to their Africa Page . Also a German entry . Texts and graphics may be reproduced freely, under the condition that their origin is clearly referred to, see Conditions .