If a professor asks to have one on reserve, then yes. You can’t check those out though, and you usually only have a couple hours to use thm before you have to give them up for someone else to use (if people want to use it).
Some professors don’t ask for texts to be on reserve though, so it just depends on the instructor. If it’s a general ed class with a ton of students, the library might have it anyway, but you still can’t check it out. In which case if you wanted to take pages home, you’d have to photocopy, like @johnpowell said.
If you’re looking for a cheaper option than buying the book from the school bookstore, grab the ISBN number off the barcode and search Amazon or similar textbook sites for it.
I used to buy my books from Amazon and then sell them back to the campus bookstore. I actually made money.