Copyright is governed by fair use case law. The devil is very much in the details as I understand it. You can make a few copies of pages for your personal use pretty much to your heart's content since (a) it's for your personal use, (b) it meets criteria for fair use and (c) it does not deprive the copyright owner of sales.
I'm no intellectual property lawyer, but making a single page copy free for a friend is very likely to be considered fair use. Copying the whole book or a whole chapter probably crosses the line. Making copies for a few dozen people, or charging for any such copying, even a single page, also likely crosses the line. I think it is questionable to maintain that copying, without charge, for a friend, a single track plan from a book that is out of print, is infringement. That's not what my intellectual property gurus tell me 
. But you'd have to take it to trial to find out for sure. I cannot imagine why anyone would waste their time doing so, but different strokes for different folks.
