A Commonwealth Supported Place (CSP) is a subsidised higher education place. You will only pay the student contribution (remaining amount) of the unit fees after the government subsidy has been applied.
A HECS-HELP loan will allow you to defer your fees to a government loan for CSP courses, allowing you to avoid any upfront fees for your course. You would start to pay this loan back once you are earning over the advised threshold. This loan is available to Australian citizens and Humanitarian Visa holders.
A FEE-HELP loan will allow you to defer your fees to a government loan for full fee paying places (non-CSP) allowing you to avoid any upfront fees for your course. You would start to pay this loan back once you are earning over the advised threshold. This loan is available to Australian citizens and Humanitarian Visa holders. You can nominate to defer your fees to a HELP loan during your enrolment, and once you log into your student account that application can be finalised.