Early 20s, starting med school in 2027: best investing/financial moves for my situation?

I’m in my early 20s and fortunate enough to be living with my parents before I matriculate into medical school in late 2027, and for now, they pay for food, mortgage, etc since I stay with them. Between now and then, I expect to make around $30–40k working full-time, and I currently have very little savings/investing experience. Obviously, this could pay a good chunk of medical expenses, but I'd rather invest it.

Additional context:

* I’ll be in medical school + residency for \~7–8 years after 2027
* I probably won’t have significant full-time income during that period
* I’m starting from essentially zero in terms of investing/savings
* My family will take private loans for med school

What's the best way I can utilize the $30-40k + money I make in medical school (say $10-15k)?

What are the best investment options and financial decisions I could make given my situation?