Ever since I started to work on the Apache APISIX project, I’ve been trying to improve my knowledge and understanding of REST RESTful HTTP APIs. For this, I’m reading and watching the following sources: Books. At the moment, I’m finishing API Design Patterns. Expect a review soon.YouTube. I’d recommend ErikWilde' channel. While some videos are better than others, they all focus on APIs.IETF RFCs.