Best way to learn a new game?
Download the pdf and then read lots of posts on RPG.net. I'm kidding. I don't like reading pdf's on my computer--my eye/brain relationship just doesn't flow that way. I like getting the actual book, with pages and everything, and then just spending time reading it: first glancing through to get the layout and then reading it in depth.
Following that, I do read the odd review online, just to compare my own notes with what other people have seen. Finally, I like to run a trial run of the game with a few people just to put it through its paces.