List Serve email addresses

I would like to make a “list serve” email for a small housing community. I have never done this. There are about 30 people and I would like to be able to give them one e-mail address that would be sent to everyone on the list. I’m a little nervous about just finding a list serve site on the web to use (if that is how you go about finding one). Can anyone recommend a reputable place to set this up? Are they free?? Sorry, but wasn’t sure where I could post this…