3 Copyright Questions

[Thing 1]

Hi All.

I have 3 questions about copyright protection and violation of that protection. I did a cursory search of the SD and did not find the answers. I apologize if they have already been discussed. Here they are in no particular order:

Are out of print books still protected? Since I cannot just go buy a copy of the book, is it legal to go to the library and photocopy all of the pages for personal use?

Is it legal to make copies of software originally sold by a company that is no longer in business? Even if you sold them, the company is not losing anything as they no longer exist.

Is it legal to sell books at a garage sale? If someone buys my old copy of The Stand then they will not be buying it from a bookstore which is costing the publisher money.

Thanks for any input,

John