Anyone know much about these certifications offered by AACN? Are they worth it? I'm eligible to sit for both. It doesn't look like many people have these certifications. Anyone know of good study materials? I used Gaspararis's CDs to study for the CCRN and learned/reinforced a lot. If there is something good out there for CMC/CSC, I'd be interested even if I didn't decided to take the exams.Thanks!