Alpe Audio - Audio courses to master new topics 'on the go'
Flowkit - Sketch library for user flows/content maps/annotations
LearnUX.io - Video courses for UX/UI Designers
Eva Design System - A free customizable design system
Piktab - Discover free graphic resources on every new tab
Sketch 101 by Designlab - Learn Sketch in this free course w/ downloadable templates