Any Good Final Fantasy 13 Newbie Guides Out?

[Sponge]

Basically, I'm up to chapter 11 now, on about mission 6.

I get the basics, such as paradigms and that, but what I don't have any idea about is what components are worth selling, which are worth keeping and what items are useful and which aren't.

Also, I'm looking for a nice Gil/CP farming place to grind at for a few days so I can at least upgrade 3 weapons for a while. I've looked around and heard that Behemoth King Versus Megistotherian is a good place for this, but I have no idea where I can find it, people say its at Archlyte Steppe, right before Ma'habara but I have no idea where this is :S

If anybody could clarify some things up or help me out that would be awesome! Thanks!
XBOX 360 all the way

Thanks a lot man! Really appreciate it!