Recommended reading/viewing:

• Kniberg – Kanban vs Scrum [long article]
• Kahneman – Thinking Fast and Slow [book]
• Milstein – Coding Fast And Slow [article]
• Reinertsen – The Principles of Product Development Flow [book]
• Croll & Yoskovitz – Lean Analytics [book]
• Ries – Lean Startup [book]
• Anderson – Kanban [book]
• Sutherland & Schwaber – The Scrum Guide [booklet]
• Gray – A Criticism of Scrum [article]
• North – Why Agile Doesn’t Scale [vid] 
• Humble – Why Scaling Agile Doesn’t Work [vid]
• McChrystal – Team of Teams [book]
• Marquet – Turn the Ship Around [book – also vid]
• Bungay – The Art of Action [book]
• Duhigg – Google’s Quest To Build The Perfect Team [article]
• Vacanti – Actionable Agile Metrics [book]
• Humble, Molesky & O’Reilly – Lean Enterprise [book]
• Lencioni – The Five Dysfunctions of a Team [book]
• Kim & Behr – The Phoenix Project [book]
• Goldratt – The Goal [book]
• Brooks – The Mythical Man-Month ch.2 [book chapter – see here or here]

Blogs

• John Cutler
• Crisp’s Blog (Henrik Kniberg)
• InfoQ
• Neil Killick
• Focused Objective (Troy Magennis)
• Pawel Brodzinski
• Black Swan Farming (Joshua Arnold)
• XProcess (Andy Carmichael)