Rather than a second job, spend some time looking for a higher-paying job.

The trick is not to work more hours, but rather to receive more per hour, otherwise you'll be stuck in a series of low-paying positions and constantly exploited. If you are working a full-time job and intend to try and support yourself, then "$24/hour" is actual minimum wage. When you look at your current salary, look at it more as receiving minimum wage and then being required to giving money back to your employer as a thank you for letting your work there.

There's plenty of good-paying work out there. If you find some and can't take it for lack of qualifications, then maybe work on getting qualified. Focus on jobs that have a clear path for growth and promotion (and that will support you following that path).

You don't want to work more hours at minimum wage, you want to work the same or fewer hours at a wage that allows you to have a stable and fulfilling life while affording you the opportunity to save for the future.