Designing Responsive Progressive Web Apps
(cloudfour.com) A good overview of design considerations and best practices for building responsive PWAs.
This resource might be a little out of date.Progressive Web App Design
(codica.com) 7 Tips for Great PWA UX and UIWhat, when & how to design progressive web apps — a case study
(uxdesign.cc) “Designing a Progressive Web App for a festival microsite.”