You can give visitors more information. This can be PDFs, YouTube videos, presentations or websites. It is best to do this via a private message so that not everyone in the area can see it.
Here you can put a link to the YouTube video or website, for example. If you want to send a file to that person, just click on the upload symbol.
Then you choose the file you want to send. This is automatically sent and the receiver can open it on their computer.