[rajasaur]

Itd be good to get a debugger, connect it to the process and run through the code. You will find a pattern emerging when playing with the application, say, for different clicks of a webapp. After a few days, you will know how the flow works.

That said, Ive been more successful looking at the forums of an open source project, figure out what problems folks have and trying to solve them. You will be amazed to see how much you can learn about the code base and undocumented features solving those problems.