Where buy shares online

I can not find what are the limits To buy shares online is not that complicated, if you have hard your eyes on some company shares but you are not sure where to start. The easiest and cheapest way to buy is through the internet, from what Is called a share dealing platform, because it allows you to buy from the various companies listed on the stock exchange. Some get listed on the bord after the may have completed an initial public offering, a process which takes them from private to public allowing them to eventually buy part of it online. So the basic principle is, if an organization that make or sells something or provide a service is listed on an exchange you can buy some of it. Form this many people can purchase and sell and trade on the stock market, and however the price to find out the fact about some products, is by the supply and demand from prospective people who own and the other who want to give it out at any particular time, the higher many and different individuals ask for it will drive it up (the lower the lower the demand for it do the opposite). I advise that anyone who is reading this to research and make more enquiries about it thank you. Onitsha, Nigeria? 
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