Can I skip someone in the post order?

The first, I understand that new etiquette says that when Bill, Bob, Pam, and Sue are playing in a thread (originally posting in that order), that it should be continued. However, I was wondering what the etiquette was if Bob's character happens to ask Sue's a question? Does Pam have to post before Sue can?

Yep! That's just to ensure that everybody gets a chance to post. You can always PM the other involved players and ask to switch up the posting order. Most of us are lenient as long as you're friendly about it.

Threadlog, Pawprints, (not used here but thought I'd ask) Storybooks. Could someone please define at least the first two for me please?

The Threadlog can be found in the top navigation (right between "Messages" and "Quicklinks"). It's just a list of in character threads your character has been involved in for easy reference.

The Pawprints forum is where people store their record-keeping threads. I use mine for keeping track of what trades I'm working on for each character.

what are Wolf's regulations on graphics, copyright, and crediting?

When you edit your profile, there is an "Art Credit" field that you can fill out. I don't believe any official policy is enforced as far as photos go, but I always find Creative Commons photos to use via Flickr because I'm familiar with the laws and did a lot of research into copyright and photos. I do know that credit for drawn artwork is enforced.