Help! Leaving a message on homepage

Hello,
I’m brand new to wordpress so be gentle.I’m trying to leave a static message on my “homepage” such as a welcome or something, but I can’t figure out how to do this without it becoming a post. I don’t mind having post under it, but I’d like to have an introduction to my site without having to have an introduction page. Is there a plug-in for this and if so, how do I use it. thanks

L