Refactoring UI [1] is a good place (from the guys behind Tailwind) - admittedly I've drunk the Tailwind koolaid, but there are some useful tips on there from a designer POV

[1] https://www.refactoringui.com/

I dislike Tailwind's choice of inlined styles in html, but I agree that the advice in the book is very good.

Unrelated tangent: I'm always frustrated when I see a recommendation for a book only to go and look it up and find that it's actually an "ebook" (in this case PDF).

Not to make a value judgement on ebooks, but I just really like physical books sometimes - if it was on Amazon I likely would have bought it.

Again, not a value judgement on the content - I'm sure it's great (I'm a paid and happy user of TailwindUI)

Yeah I agree, there's something about holding a book in your hands. I also think it helps hold my focus and lets me retain what I read better.

The Non-Designer's Design Book is the best resource I know of for learning general design guidelines, which apply to what you're asking. I've bought this book for many developers and they've all loved it.

This stuff all falls under the umbrella of “design”. One thing that helped me a ton was the articles at https://learnui.design - especially the 2-part “Rules for Designing Gorgeous UI”. The course itself is also excellent.

I have made notes about these things you're asking. But no idea how to share them.

You could refine them, group the points and put up a blog post (or a GitHub page) and share that here (as its own submission). If it’s with visual examples, all the more better. I’m sure somebody will find it useful.

Graphic design