I've been an RN (ADN) for close to 20 years. Most of it has been cardiac. Some hospitals have internship programs that can help you with advanced knowledge and get you right into the nitty gritty of it all. I first worked in a step-down unit that had 12 tele beds. After that I did some home care then back to the hospital on a tele unit. I ended up in a cardiology clinic and now work in Electrophysiology testing and programming pacemakers and ICD's. AWESOME job. Cardiology is an awesome way to go. Good luck and have fun.