I'm a dead-tree fanatic, but I've also found that it's the blog entries (when available) regarding functionality that do more digging than a book (usually) has the time for.
A blog entry is strongly-targeted to the specific issue; that's why there was a blog article. While I can't cut-and-paste from a Real Book (tm) I could just as easily type in a code sample mindlessly, without any thought to how it works, why it works, or its relation to anything else.
I view this as a discipline vs. time vs. curiosity issue rather than the information source, but (as I've been told recently, quite a bit) I'm abnormal.