I'm looking for some data API for my stocks application which can be parsed. I want to use it for displaying data as well as drawing graphs purpose. I have seen other posts pointing to Yahoo or Google APIs etc, but haven't really got the idea how to use them.
Can anybody please point me to any guide which can be helpful?
Yahoo is one source for Quotes, there are others (Google is your friend).
Core-plot (code.google.com) is very popular for drawing graphs on the iPhone.