Not sure about QLD, but I'm assuming it's similar to other states. The below is what I found for a basic license. If you're wanting advanced I believe there is additional criteria:
- You apply for a license by filling out a form, and pay the government money.
- You sweat it out for a few weeks, and then the government normally grants a license/permit (You may get knocked back is if you have a conviction with cruelty to animals or similar but otherwise I think approval is similar to a library card - almost anyone can have one unless there is extenuating circumstances).
- When you acquire an animal you give your license details to the person you acquire it from and you record their license details.
- Each year you submit a form advising the government of the animals you have acquired and disposed of, along with any deaths, thefts or escapes.
- When your license is due to expire you pay for a renewal if you need to keep your permit. (ie, if you still have animals or wish to obtain some in the future).