Especially for a beginner trader, it's super important to choose a broker, because that determines what tools will be available, what fees the platform has, and what opportunities it will provide. If it's not clear yet, I recommend the broker review for beginners at the link here https://wordable.io/best-brokers-for-beginners/. It compares different leading broker platforms by fees and features, and there's also information about brokerage accounts.