No, buy everyone in your dept the book in your list that'll impact them the most, and then encourage everyone to read it and discuss how it impacts the business

No, buy everyone in your dept the book in your list that'll impact them the most, and then encourage everyone to read it and discuss how it impacts the business. This seems trite but if done right, it's a very positive impact. Your company culture will dictate whether this is even possible though. If you don't already have great communication and collaboration with your team, then a "book club" might not be a good first step, and your training should be focused on team building instead.