A librarian is someone who works at a library. A library is a place where you can go to borrow books, movies, music, and other things to read, watch or listen to.
So, when you go to the library to look for a book, the librarian helps you find it. They know where all the different books are kept and they can show you where to find them.
But that's not all librarians do! They also help people find information they need. For example, if you need to write a report about whales, the librarian can show you where to find books and websites with information about whales.
Librarians also help keep the library organized. They make sure the books are in the right place and in good condition. They also help decide which books and other materials to add to the library's collection.
So, next time you visit your library, say hi to the librarian and thank them for all the help they provide and for making sure you have access to so many great books and resources!