Dummies books are a great "jump start" on a selected topic.
I picked up this one because it is full of links to resources for RSS syndication.
$24.99 - read in one night. Chalked with resources on RSS and blogging.
It's a great quick start on RSS readers, writers, and the syntax for RSS.
Note: One disappointment is that this book really glosses over version differences between the various RSS versions and ATOM. See my upcoming review on the O Reilly RSS book in the next day or so for a better comparison.