In addition to going directly to articles, consider dropping an email or two to researchers working on those topics (perhaps once you’ve found an interesting article of theirs). Many are very willing to provide their overview of the area and point you to interesting resources. While there are times when you won’t get a response (for example, before conference season or at the end of the semester), most are genuinely pleased to be contacted by people interested in the topics they care about.
In addition to going directly to articles, consider dropping an email or two to researchers working on those topics (perhaps once you’ve found an interesting article of theirs). Many are very willing to provide their overview of the area and point you to interesting resources. While there are times when you won’t get a response (for example, before conference season or at the end of the semester), most are genuinely pleased to be contacted by people interested in the topics they care about.