Wonderful free resources:
Poster
https://d1bsmz3sdihplr.cloudfront.net/media/Posters%20Download/50_Romans.jpg
Video introduction to chapters 1-4
https://bibleproject.com/explore/video/romans-1-4/

Here, in Romans chapter 2, is the origin of the popular phrase: "A law unto themselves." In World culture, it is associated with rebellion - people making up their own rules for themselves as they go along -  but in Romans chapter 2 it means the opposite - a good conscience becoming our inner compass!