Cengage was terrible to use as a student but it wasn't the worst. Trying to cite the resources from the courseware is impossible as you manually have to type it out removing any benefit and making it literally less useful than a physical book especially if you only have a single screen. The worst online platform I've used it took me a week to figure out the terrible UI to actually use the textbook part, you had to go into the text section, know exactly the section you were going to and then browse the pictures of the physical textbook. Questions for homework build only be accessed through a submenu of this section. Every 10 minutes you'd be prompted to take a break, ruining your concentration, and every hour you'd be signed out. It was a nightmare. I much prefer the books.