At its zenith in the middle of the 15th Century Timbuktu was known all over the world as a repository for all sorts of knowledge, including Arabic Islamic writing, science, maths and history. What is so important about Timbuktu's literary patrimony is that it is a challenge to Western ideas that Africa is a land of song and dance and oral tradition. It reveals a continent with an immensely rich literary and scientific heritage.
A solid working knowledge of productivity software and other IT tools has become a basic foundation for success in virtually any career. Beyond that, however, I don't think you can overemphasise the importance of having a good background in maths and science .