Their are lots of trading platforms that all work great. Vanguard, E*Trade, Robinhood, Webull. Their are a ton. I’d see who has the best promotion going. Some allow you to buy partial shares which is cool. I personally use E*trade and like it. Very user friendly platform. Customer service is handy. You call and they put you in line then call you back. Better than waiting on hold. They have been very helpful in helping set up custodial accounts for the kids and SEP IRA’s for my business. I also have a Robinhood account. I don’t much care for the platform. Just not as easy to use for me