If there's a certain category in mind, they can certainly do searches on that, so that would help answer a specific question. If you're dealing with a more basic level of knowledge, someone coming at it fresh, the best place to start is probably with the main estimates themselves. There's a three-page summary of government spending and changes, and it's written in a way that most people would understand. That's a nice starting point. As I said, the advantage to this is it can answer specific questions or provide general information.
On November 21st, 2013. See this statement in context.