I'm reiterating what's already been said by others, but as more explicit instructions: 1. Download the code and figure out how to build it. 2. Figure out how

I'm reiterating what's already been said by others, but as more explicit instructions: 1. Download the code and figure out how to build it. 2. Figure out how to run it. 3. Figure out how to attach a debugger to it. 4. Figure out where to listen/break for an event whose purpose you pretty much understand (like the initial DNS request). 5. Follow the code down the rabbit-hole, you'll be amazed at how quickly it connects you to everything else in the code.