After learning investing  stocks through  a mutual fund, I am thinking of another form of stock investment. This time I am searching how to invest through buying of stocks.  What is trading of stocks all about? And the buying and selling of stocks. These are two investment movements that I want to know fully well before diving into it. 
As of this time I have only known two possible online trading centers. The Citisec On line and the BPItrade. I am studying both of these two on line site for the buying of stocks.