Nawvel - Nawvel is a handy-dandy library of tried, tested & curated resources.
Look at that SaaS - Inspiration and resources for SaaS founders
Startup Network - Predicting successful startups using AngelList data
Good Sales Emails - Best sales emails from great companies
Google Design Sprint Starter Kit - This Kit helps you to run your first Google Design Sprint.
Startup Stash - A curated directory of 400 resources & tools for startups