Jstor is like a big library on the computer where you can find lots of books and articles about different topics. Just like a library, you can't take the books home with you but you can read them on the computer.
Jstor has books and articles about things like history, science, literature, and lots of other topics. People who write books and articles can put their work on Jstor so that other people can read and learn from them.
You have to pay to use Jstor, just like you have to pay to buy a book or go to a real library. But sometimes, if you are a student at school or university, your school might pay for you to use Jstor.
Jstor is really helpful because it has lots of information that can help you learn and understand things better. So, if you're curious about something, you can look it up on Jstor and read about it. Happy learning!