As a student, you may need help and assistance at different stages of your coursework. You may sometimes just need access to coursework material to help you use as a guide to complete your work. At other times, you would require textbooks that you could borrow for a short period of time. Or you may even be after all these services at all times which you could benefit from when needed.
Students find it difficult to buy all textbooks that may be required for their program of study. So, the vast majority of students prefer having to go for a set of textbooks that they can use on a short term basis. This is why you will find a number of coursework help sites offering textbook rentals together with a range of other coursework material that students could use to improve their performance in college.
Sites like Chegg and Course Hero offer a range of Course work material that students could use to improve their performance in colleges and Universities. They are subscription based websites and have a number of resources that students from different backgrounds can benefit from. You can check out what some of the similarities and differences between Chegg and course hero are at https://cheggvscoursehero.wordpress.com/.