I am still fairly new. (still mid apprenticeship) I just renewed my first aid and cpr after a couple of years of it being expired.
I was sadly disappointed. I had thought I would have learned something newer or more advanced. Since I didn't, what is the next step after CPR/First Aid? Is it going for the basic level of EMT? Advanced medical is not required for my department, but I personally view it as a valuable skill.
If your willing to work hard, the next step would be EMT-Basic. Some departments will help buffer the costs of the class, may be worth you checking into