Sketch Repo - Collection of resources for anyone who uses Sketch
Alpe Audio - Audio courses to master new topics 'on the go'
Sketch 101 by Designlab - Learn Sketch in this free course w/ downloadable templates
LearnUX.io - Video courses for UX/UI Designers
RookieUp Career Bootcamps - Tools to help designers build great portfolios and get jobs.
Piktab - Discover free graphic resources on every new tab