I graduated nursing school in 2013, been working in the ER since and I recently passed CCRN. Never seen a swan, or IABP. I recently took on a second per diem job in a level one trauma PACU, so now I use A-line all the time. This book is great, straight to the point. The author tells you which topic to focus on and how questions are usually worded. That being said, for me personally, being that i didn't have any ICU experience, I really wanted to understand the concepts, so the AACN book is what I read to understand the concepts, than I read the Barrons book for key factors and really good practice questions. Great refresher for someone with lot of ICU experience. Barron's CCRN Exam: 9781438