Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
IDEO Design Kit - Step by step guide to learn human-centered design
Geneva - An all-in-one communication app for groups & communities
Figma Community - Publish live design files for others to learn from & remix.
UI.Figma.Cool - High-quality Figma resources and completely free to use.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.