On Tyranny by Timothy Snyder is a valuable thing to have by your side in these times of increasing fascism.
Each chapter begins with a short bit of advice as it's title, followed by a sentence or two on it's potential importance. The rest of the chapter provides concrete historical examples.
Each chapter is short, and the book is only 126 pages. Possibly the most valuable thing that you could ever read.
I'm going to be posting the first page of each chapter, because of how important I think it is to share these ideas. Please boost if you feel them useful.