The finished project, slides, notes, and code snippets for the Server Side Swift Saves CodeMash precompiler at CodeMash 2020. The gist with the HTML can be found here.
Swift, Java, Node.js, Ruby? Advantages of Server-side Swift - conference talk from the two (former) Kitura devs with some interesting metrics on Server Side Swift performance vs Node and Java
Server Side Swift Conference - some great videos of talks on all levels of server side swift concerns
Who Killed Kitura? - thoughts from Mohammed Azam on the ending of IBM's Kitura project
RW Server Side Swift With Vapor - the book I relied upon most while learning, but goes much deeper. Includes chapters on deploying to cloud services, setting up iOS and Mac apps, authentication, etc.
[Hacking With Swift's Server Side Swift tutorials](https://www.hackingwithswift.com/store/server-side-swift - great and helpful content from Paul Hudson
Vapor University - Vapor's own aggregator of Vapor tutorial content from all over the web.