Tradelink is one of the best applications to understand if you are starting to learn Quantitative Trading or High frequency finance. You will be able to learn how broker APIs are connected by studying the code, and understand how trading strategies are implemented by Quants. Following has steps to for a quick start: http://www.quantcode.com/modules/smartfaq/faq.php?faqid=93
Got a question or problem with this link? Just enter your message and click on submit. No registration is required.