Comprehensive Review for Stroke Nursing is published by AANN and is supposed to cover all of the content that is found in the SCRN exam. The drawback is that it's in outline format, so it's a little more difficult to follow than your typical textbook. A couple of the sections didn't seem fully fleshed out either, especially the chapter on meds. And there aren't any pictures or diagrams, so following the section on anatomy would have been difficult without a different reference to compare. Speaking of which...
Clinical Practice of Neurological and Neurosurgical Nursing is a great textbook that covers a lot more than just strokes, but the relevant chapters work well as a companion to fill in the blanks in the Comprehensive Review. My guess is you could probably get away with just studying this textbook, but make sure you check out the test content outline in the candidate handbook to make sure you're not missing anything.

They are a little expensive, especially the Review, so hopefully you can find someone to borrow these from, or check with your unit educator or hospital library to see if they have copies.

Good luck! I found the test itself fairly challenging, but I was able to pass the first time through. The hardest parts for me were the questions about ER and critical care since I work on a med/surg-level neuro floor.

I also work on a neuro unit (neur & tele) and am a new grad. I was looking at getting this book...

Clinical Practice of Neurological & Neurosurgical Nursing https://www.amazon.com/dp/1451172672/ref=cm_sw_r_cp_api_aIKvyb6YZDP5G

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