Resources 

100 ways you can take action against racism right now
9 Ways You Can Take Action Against Racism Right Now
100 Things White People Can Do for Racial Justice
(This article is written by a white person and focuses on how white people can become better allies for racial justice by understanding the nature of racism in the U.S. and taking actions to reverse it.  But most of the items on the list aren’t only for white people.)  
Beyond Protests: 5 More Ways To Channel Anger Into Action To Fight Racism
Essential Conversations
Businesses Must Take Meaningful Action Against Racism
(Written for work environments, but it provides good guidance for white people on interacting with people of color about race in other contexts as well.)