Long Term Visa without work/study or marriage?

If you neither need nor want to work, a 180 day visitor visa is much easier to apply for. Then again, you may want to do volunteer work.

The requirements for a WHV (age range, money, etc.) and the permissions (total duration of stay, work restrictions etc.) vary by nationality. BOCA’s website should have the most up to date information, but you apply through your local TECO/TECRO. See the following thread for more.