Some textbooks for your courses are in the library collection (check for the title in the online catalog to see - https://hcpl2.ent.sirsi.net/client/en_US/lsc/ ). However, most must be purchased from the campus bookstores.
Print books can be ordered from the bookstores and delivered to your home. E-Books can be accessed online.
Look up your course and section to see which textbooks are required and available. Be wary of purchasing used printouts of e-books, as they may lack online features of the actual electronic book.