Book list ethics

[Artsy]

Hey ~ forgive me if this is the wrong section to ask in. 

I want to clarify the copyright/approach with the booklist ~ my current understanding is the value of other people's books as a paid product is that I would never have found many of these myself or have as much clarity priortising their relative value. 

Reading and integrating the top books has added massive value to my life (for example the insight from one book fully saved my relationship.) 

My question is what's the ethics of sharing books with friends/family members that I can see would also reap massive value, but would be very unlikely to go out and purchase the book list? 

Access to these insights and information in an ideal world would be common knowledge and prevent massive suffering. 

Is sharing individual books okay?

Is sharing collections of relevant books okay?

Practically where does the copyright start/end, is it the whole compiliation plus the added value that constitutes the copyright where an individual recommendation does not? 

Thank you for your thoughts.

 

[Leo Gura]

Sharing select books is no problem.

Sharing the whole list or most of the list becomes unethical.