A series of verified content sources to start learning OKR.
Google Startup Lab on using OKRs and how they contributed to the Google success.
John Doerr, the maximum expert of OKRs in the world, talks about the history of OKRs, and how different companies and organizations became successful by using them.
Christina Wodtke presents a startup story, the struggles and the solutions to be successful. The book is full of pratical tips on how to correctly roll-out OKRs in your organization.