Ok so I am taking the first responder class now as a college credit and will be taking the EMT-B class starting in January. I have also worked as a dispatcher and as a CNA in an ER where I am from. I was just wondering what if there are some of the things were that they really dont teach you in these classes to get me prepared for some of the things that I will be doing? And how long should I wait until until I do the EMT-I class?