Vidrio - Holographic screencasting app for Mac. Free for COVID-19
Sketch Talk - A community for Sketch users of all skill levels
Scrimba - Interactive coding screencasts created in an instant
Sketch 101 by Designlab - Learn Sketch in this free course w/ downloadable templates
GoRails - Ruby on Rails screencasts for Web Developers
RookieUp Career Bootcamps - Tools to help designers build great portfolios and get jobs.