I am going to go point by point:
You have your EMT-B. Judging by your SN, you are American?
Yes, I am an American.
You are not currently in either an American or Australian paramedic program?
I am going to be an English teacher in a foreign country, neither America nor Australia, but there is a paramedic training program nearby that follows the Australian standards and administers the Australia paramedic exam. I plan to work as an English teacher and to take EMS classes here and there at night and on the weekends, in part because I think it is valuable knowledge to have, and in part because I am interested in EMS. However, I also enjoy being an English teacher, so I am not going to study EMS full time.
You wish to study on your own for the Australian paramedic exam. Do you plan on taking said exam? Is it not a requirement in Australia to attend a paramedic program prior to sitting for their licensing exam?
At some point, when I have completed the requirements and I feel as though I am prepared, I would like to take the exam. I am not planning on becoming a full time paramedic, but if I complete the courses and I feel prepared, then I would be interested in the exam to test my skills. My English teaching job will not start for a couple more weeks, so I would like to do some readings and what not for now while I have more time.
You plan on using the knowledge you gain from studying for this test to provide advanced medical aid to a potentially sick diver, up to and including giving medications and performing procedures outside of your current scope of EMT-B? Will this all be freelance medical care, as well?
Not necessarily--I originally completed the EMT-B course because I was spending my summers working as a lifeguard and now as a SCUBA instructor. Lifeguards and SCUBA instructors cannot do all of the things that EMT-Bs can do, for example we are not allowed to give people nitro, but even though I couldn't practice every EMT-B skill, I still think that the EMT-B training and certification is valuable for people who are not working as formal EMTs. I may not administer medications to a diver having a problem when I am working as a SCUBA Instructor, but having additional paramedic-related knowledge can still be helpful regardless of whether I will be doing everything of which a paramedic is capable. While working as a SCUBA instructor, I will have liability insurance, and I will follow the regular standards without acting outside of the proper scope of practice.
Any further clarification you wish to add would be appreciated as well...
I would be happy to further clarify any other aspect with regard to my question.