If it is not free at the Library I work at, I can get it through Inter-Library Loan, which is AWESOME, or there is always the internetwebs search for "(insert book title here) pdf" or for older books, Project Gutenberg.
for example. You wanna read Hemingway?
Old Man & The Sea
http://www.arvindguptatoys.com/arvin.../oldmansea.pdf
The Sun Also Rises
http://www.24grammata.com/wp-content...24grammata.pdf
Complete Short Stories of Hemingway
https://theteacherscrate.files.wordp...-hemingway.pdf