For students asking textbook questions here are some loans to options outside of buying from the bookstore:
ASI Project Connect: http://asi.sfsu.edu/asi/programs/project_connect/bookloan.html
SFSU Bookstore Textbook Rental: http://rentals.sfsubookstore.com/
Online textbook rental:
Mira, thank you for these fabulous resources! I’ve already given the URLs out to several students. Really helpful. -Nicole