And if your library doesn't have exactly the book you need, you may be able to interlibrary loan it, aka get it from another library through your own.
I do this mainly to see if I like the book. If I use it a lot throughout the time I have it, I'll buy it. If not, then I didn't waste any money on a book I'll never use.
Kanaye = Kuh-nay
I divide all readers into two classes: those who read to remember and those who read to forget.
~William Lyon Phelps