Instead of being printed on paper, the information is posted online on the publisher's website. Students can access the website and log in to read it anywhere, anytime. Additionally, e-books are sold online at a lower price than printed books and students can purchase them at any time. Without paper printing, not only can the company save billions of dollars, but also the students. Another key point is that e-books are weightless. Middle school students, who have a smartphone, can read directly on their phone; others, who do not have a smartphone or laptop, can go to the campus library or computer lab to read the online version of the book. Learners don't need to carry heavy printed books around campus as long as their device can connect to the internet, then they can read them easily and efficiently. Additionally, the e-book format provides useful tools like a highlighter, translator, and simpler tool that users can use to add, delete, or take notes.