What happen to my Library after my death

Hello, 

I didn't find anypost about this (help me out if the question has already been answered). 

I think the subject of the post says it all. I'm new in the ebooks World and I am a little concerns about my library. 

1- Half of my "paper books" are philosophy books and the second half are novels. I know that at my death, I'll give my philosiphy books to my sister et the novels to my kids. Is there a way to know what happen to my eLibrary at my death and how I can manage it for that moment?

2- Also, my sister and I like to lend/borrow each other philosophy books. I know there is a copyright thing, but is it possible to lend one of my book to the account of my syster and when she has it, I don't have access to it?

3- At last, is it possible to sell old books that I don't want anymore?

Thank you, 

JF