This small life hack saved me hundreds and maybe even thousands of dollars on books and textbooks while I was in school. Also a great way to start pursuing your daily reading aspirations, or study ECO 101 on the go, or just leave that big bulky harry potter book home and take the story with you.
Have all of you favorite reads all in one place, go back to them whenever you have down time, highlight things, take notes for your upcoming exam and print them, or just sit down at the park and continue that novel right where you left off.