I think being a nurse assistant is a lot easier to achieve then becoming a nurse eg: theatre nurse, registered nurse.....Contact your local education department or have a look at your local newspapers some advertise training courses.....Nursing assistant or Nurse Aid, you do not need a university or teritary qualification. This is more Oz basis, but Nursing Assistant duties are very limited. You are more of a carer then a registered nurse.
learning to spell assistant would be a good star
this website will also probably help you