Reddit mentions of ECG Interpretation Made Incredibly Easy

I had to purchase this book for my coronary care course. I'm not usually a fan of assigned reading material, but this book actually explains things really clearly. It goes over the steps involved in obtaining and interpreting rhythm strips, all your major arrhythmias, treatments, and the 12-lead ECG.

As far as rhythms, the bare minimum you should be able to recognize (at least by the time you're caring for basic tele patients): normal sinus, sinus tachycardia, sinus bradycardia, sinus arrhythmia, afib, PVCs, vtach, vfib, asystole (imo these are the most common and/or the most recognizable). You should know what PQRST represents. How to determine heart rate, PR interval, and QRS duration, and what are the normal values. Knowing when a strip is showing an ominous rhythm vs. simply artifact. Also doesn't hurt to go over normal cardiac anatomy and physiology.

FYI my nursing school taught me nothing about tele, it was all self-taught via the above textbook + online post-graduate coronary care courses. I needed to submit a passing grade to my place of employment before I was allowed to care for tele patients. Maybe your hospital has a similar policy?