18 and need help saving money!

I have never really taught how to be really good with money and managing it and I come from a family with really poor financial hygiene, with my family struggling with debt. I don’t want to continue down this route and continue this cycle for future generations. I recently moved out of home and I have a part time job where I work a minimum of 50 hours a paycheck, generating around 1.1k fortnightly. My expenses aren’t that high but I genuinely struggle with putting some money aside for emergencies or general life expenses.

My rent is $400 per fortnight, groceries ~$100. I just don’t know how money i should be saving with the $600 dollars that I have in the buffer of each paycheck.