What do you do in those book clubs majorly. Do you share the highlights and screenshots of the parts of the books in those clubs?
As a leader, I purchased the books for everyone using the company credit card and make it clear that it's your book to keep - so take notes, highlight, whatever you want.
The leader facilitates the conversation. Some leaders will post questions in advance on Slack. Other leaders will develop questions on the fly based on the direction of the conversation.
In the best product design and engineering books clubs, people reference specific passages and quotes which spark conversation about implementation within your own shared work.