UX basics

General principles of UX http://asktog.com/atc/principles-of-interaction-design/ [ru]http://ashapiro.ru/translations/tog-first-principles/

10 Laws of UX Psychology http://3.7designs.co/blog/2010/07/ten-laws-to-design-by/

Examples

Microinteractions https://www.smashingmagazine.com/2016/08/experience-design-essentials-animated-microinteractions-in-mobile-apps/