BooksEric Ries - The Lean Startup
Steve Blank - The Startup Owner's Manual
Alexander Oserwalder - Business Model Generation
Alexander Bell - Mobile & Cloud Computing (free eBook as PDF)
Online LecturesHow to Build a Startup
Conference TalksMark Suster's speech at NYU Stern
Eric Ries interview at NYU Stern
Steve Blank's speech at NYU Stern
Eric Ries speech at Google about "The Lean Startup"
Ben Silbermann's (Pinterest) speech at Startup School 2012
Project A Ventures
Startup Weekends3 Day Startup (at WHU Vallendar and RWTH Aachen)
Startup Weekend (Munich)
Feel free to add some other resources, I'll do it as well from time to time.