What are the different types of plumbing?

I live in Victoria Australia, and I'm interested in become a plumber, I understand I need to complete a 4 year apprenticeship and the journey man's exam. I just wanted what different forms of plumbing there are and what defines them. I'm mainly interested in becoming a sprinkler fitter or fire... show more I live in Victoria Australia, and I'm interested in become a plumber, I understand I need to complete a 4 year apprenticeship and the journey man's exam. I just wanted what different forms of plumbing there are and what defines them.

I'm mainly interested in becoming a sprinkler fitter or fire protection plumber and kinda wondering what the best way to get into the industry?
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