What are CSS Variables and how can they help you make your Lightning Web Components more maintainable and reusable? This article gives a short introduction on why and how to apply them, with a particular focus on Lightning Web Components.
Enterprise Design Pattern (fflib)
What is the Enterprise Design Pattern; why would you apply it; where and how to start? Implementing this pattern will help you structure your code base, promote reuse of methods and allow to reduce unit test runtime thanks to Mocking.
No further elaboration required.