The Startup Way - The new book from Eric Ries, author of The Lean Startup
GrowthHackList - 100+ curated growth hacks for makers + early stage startups
UI Playbook - The documented collection of UI components
UserInterface.io - Weekly UI/UX tips in your inbox for free
UX folio - A portfolio builder for UX designers
The Path to Senior Product Designer - Grow your UX career and get promoted