I recently just passed the CCRN in March. The only thing I used was the PassCCRN book. I really just used the disc with test questions and used the book when I didn't understand something. The book is great but very hard to read consistently due to the amount of info.
I am preparing to take the CCRN in October. I have the Pass CCRN book and I have been alternating between the book and the online companion questions. I am studying for it system by system. I am spending a lot of time on cardiac because it is the largest section on the exam and also my weakest subject. I am enjoying the learning process and I hope to be ready in two months.
I "passed" the CCRN using only the review CD from the 3rd edition of Pass CCRN as well as my own notes taken from watching (and rewatching several times) the Gasparis DVDs. I studied hard-core (2-3 hours/day for a month) and passed with 100/125, with > 90% on both Cards and Pulm. sections. The questions on Pass CCRN were more challenging than the actual questions, so I think that they were great preparation for the real thing, and Gasparis is a wonderful teacher.
So, I've watched the Endocrine DVD and I'm now watching the Neuro. I have never laughed so hard while watching a study material. Laura Gasparis is funny!!! I really though people were exaggerating but I stand corrected. Lol.