Startup Toolkit - Interactive how-to guides to launch your startup
Manager checklist - Cheatsheet of things every manager should do
Techstars Entrepreneur's Toolkit - Online resource to help you learn about entrepreneurship
Checklist - Make a list of everything that you need to do during the week with Checklist. The lists that you make can be shared with friends and family on social media or sent in a message.
AwesomeHunt - Community-curated lists of learning resources on any topic.
The Startup Checklist - 25 steps to a scalable, high-growth business