Above is a link to sign up with Robinhood; an investment website and app that allows you to buy and trade stocks for free. Using the link above will give you and me at least 1 free stock.
The only “cost” to using Robinhood (free), is that your account will not earn interest. There are no fees to withdraw funds. They also offer a margin account which does require a monthly fee. The purpose of a margin account is that Robinhood charges you a monthly fee but grants you more “Buying Power” which is what is used to purchase stocks.