Brokerage account advice

Hi! I’m a 27F making about 130k per year. I have a pretty good 401k ROTH (I get the company match and don’t want to pay the taxes later) currently at 80k and I have a Roth IRA. I have a personal savings of 10k and plan to contribute to it until I reach about 20k for emergency. I want to open a brokerage after I reach that goal, but I’m not sure where to start. Any tips on what to invest in, and should I contribute every paycheck toward the same investment? I plan to use this in about 5-8 years for a housing down payment. TYSM!