My recommendations

Books - Agile

These are the books I recommend everyone reads to understand agility.

1. Joy of Agility - Joshua Kerievsky

2. Making Work Visible - Dominica DeGrandis

3. The 4 Stages of Psychological Safety - Timothy R. Clark

4. The Nature of Software Development - Ron Jeffries

5. Lean Inception - Paulo Caroli

6. The Phoenix Project - Gene Kim, Kevin Behr, and George Spafford

7. Kanban: Successful Evolutionary Change for Your Technology Business - David J. Anderson

Books - Systems Thinking

1. The Fifth Discipline: The Art & Practice of The Learning Organization - Peter M. Senge

Books - General & Productivity

1. Forever Employable - Jeff Gothelf

2. How to Take Smart Notes - Sonke Ahrens