One thing I never "learnt", if learning this is even an option, is things such as UI Design. All my projects in the past have used some sort of template or framework such as bootstrap or more recently quasar.

However, now I really (like really really) want to learn some Design stuff, I want to make my own projects from scratch using my own design and make something that I can look at and be really proud of.
I've been following Adam Wathan & Steve Schoger's `RefactoringUI` (https://refactoringui.com/) and it's absolutely amazing and delves into so many little details I would have never thought of but without would make an app so bland.

What Design resources/things can other people recommend?