There is an overwhelming amount of information available to help you understand racism in America and how to be an anti-racist. If you're not sure where to start, here are some good resources:
Scaffolded Anti-Racism Resources: Resources and information organized based on your current level of knowledge and engagement; creates a good progression to follow.
Anti-Racism for Beginners: Resources broken down by question, like "What is white fragility?" and "How do I talk about this stuff with people who disagree with me?".
Justice in June: This google doc has a calendar of daily activities you can do (with different time commitment options).
Stamped from the Beginning - free on Spotify