Superannuation contributions commence when you start work.

The advantage of superannuation is tax effective savings that compound to increase your investment.

The disadvantages are your money is not available until retirement age and the funds are subject to government regulation.
Consolidate all superannuation into one fund. Be active in choosing different investment strategies and options.

If you want more control consider self-managed superannuation funds, however ensure you understand the government reporting and compliance needs first.

Most importantly be aware of your situation and the guidelines well before you plan to retire.