in reply to
"I am also writing a program that trades shares,everything is going fine only i have no idea how to process the orders with the web: making the program wait for confirmation of the order, logging in broker, making the program do what i would do if i bought via web broker. What would books would help me in my cause?"
I don't understand Dutch but you should check to ensure that this does not violate the terms and conditions of the website. I notice they provide other products/services for trading. Perhaps they have an API which you can use which would actually solve some of these problems for you.