A tutorial on modularizing existing R Shiny apps – how and why do it and what to keep in mind. Differs from many other tutorials in that it follows a top-down approach: instead of using an example of writing a simple modular app from scratch, I took a complex real-life app and broke it down into modules.
A brief tutorial on the easiest – albeit limited – way to theme Shiny apps using CSS tags. Should be enough for most apps; also works if you need to make ad-hoc changes to a premade (e.g. corporate) theme used in your app.