Download the app Robinhood and set up the account and your banking info. You can deposit some funds to invest, however, timing is everything. I've done very well with the bio-med stock Moderna (MRNA) and bought/sold before each swing to pocket $250. Today it dropped 14% again and I immediately bought 20 more shares and will wait for the increase of 10-15% and then cash out.
This is a way to play short term transactions, leaving the growth stocks to the broker. Once we find where the damn bottom is, the market should be pretty good!