research

in my opinion, i am interested in business,because do the business you should face a lot person. You need to know how to deal with the different situation and the most important is to make money. Moreover, i would to prefer to do a research about stocks exchange in the world, such as in China, Us, UK, Japan. when i was in college i buy some stocks and exchange to make money.
i want to have below these questions
1 how can we buy stocks and exchange
2 the history of the world exchange
3 How difference of the different countries policy of stocks
4 how do company use the stocks to financin