Now, I understand that there is a section where it teaches you how to use your words in whatever language you're taking, but I, and probably a lot of other people, prefer taking our own notes in a way we understand it. Perhaps Duolingo could add a virtual notebook or something so that we can keep track of what we need to work on, and see what mistakes we need to fix. If you could consider this, and tell me what you think, I would be really grateful. Thanks!
Duolingo is great, but that doesn't mean that you should limit yourself to what the website offers. Nobody says you can't use a physical notebook while you use Duolingo. I use one to write down sentences because I don't want to be translating to English all the time. It helps me to remember things better which is more important to me than how many points I earn on the website.