The Startup Way - The new book from Eric Ries, author of The Lean Startup
UIFry - 1000s of Templates, Briefs, Jobs & more for UI UX designers
GrowthHackList - 100+ curated growth hacks for makers + early stage startups
BaseTemplates - The easiest way to build your pitchdeck and raise money
UI Playbook - The documented collection of UI components
Dribbble - Shots from popular and up and coming designers in the Dribbble community, your best resource to discover and connect with designers worldwide.