Books
Refactoring UI

Make your ideas look awesome, without relying on a designer.
Learn how to design beautiful user interfaces by yourself using specific tactics explained from a developer's point-of-view.
by Adam Watham & Steve Schoger
Goodreads Link
Rework

With its straightforward language and easy-is-better approach, Rework is the perfect playbook for anyone who’s ever dreamed of doing it on their own.
Hardcore entrepreneurs, small-business owners, people stuck in day jobs they hate, victims of "downsizing,"
and artists who don’t want to starve anymore will all find valuable guidance in these pages.
by Jason Fried & David Heinemeier Hansson
Goodreads Link