Opening a custodial brokerage account can usually be done in just a few minutes and entirely online. Here are some of the things to know before you get started.

Brokerage accounts trade assets like stocks and ETFs; taxes apply on gains and dividends annually. Choose between self-service, automated, or full-service accounts based on your investment needs.

Whether you choose a long-time favorite like Charles Schwab or an innovative new brokerage like Robinhood, ensure you’re aware of competing features and fees so you can trade as effectively as ...