Roth IRA first
Open a Roth IRA at Fidelity (no minimums, no fees). Contribute up to $7,000/year. After 5 years, your contributions can be withdrawn penalty-free.
Allocation
Target-date funds (FDKLX, FDKVX) are fine if you don't want to think about it. For DIY: 60% total US stock (FXAIX or VTI), 30% international (FTIHX or VXUS), 10% bonds (FXNAX). Rebalance once a year.
Black-led funds
If you want exposure to Black-led companies specifically, NACP (Impact Shares NAACP Minority Empowerment ETF) holds companies with the strongest racial-equity practices. Use it as a satellite holding (5–10% of the portfolio), not the core.