adaliabooks: I think knowledge is the main thing... knowing what you are looking at, and what to look for is most of the battle. I got stuck majorly by not recognising a hint as a hint (because it was something unfamiliar to me). Most of the information you need is available between the first two giveaways and the information ZFR has linked to.
Mhm, I don't really know what to look for, and know quite literally nothing about programming... which seems to be a bit of a dealbreaker. The number of variables ("what could this mean?") seems just so vast that I'm just chasing waterfalls ;)
I checked out the previous challenges quickly, but, obviously, those solutions seem kind of plausible and logical in hindsight (although I imagine it's pretty easy to get stuck even when you're already on the right track).
But like chevkoch said, major props to the people who solved this already!