Telemetry Nursing , HELP

I am new to Telemetry nursing and to the hospital setting. Although, I started at a community hospital it is a difference from Rehab nursing and SNF, which I have experience with. I have been trained on reading telemetry strips but I feel like in those courses they teach you the cookie cutter rhythms etc. I have been looking at the monitors at work and sometimes struggle to understand what is happening. Like when the monitor calls a rhythm VTACH or AFIB but it’s really not. I ask other nurses and they review the rhythms and say it’s fine. I am looking for a book or other resources to better understand telemetry, the monitors and treatment for different rhythms. I appreciate any advice posted. Thank you !