This is an update to a question/issue I just posted. I couldn't remember the name of MAMP. I thought it was LAMP or PAMP!
I think I found the info I need to set up a test site.
I've just read about MAMP and Wordpress at http://codex.wordpress.org/Installing_WordPress_Locally_on_Your_Mac_With_MAMP I plan to use this to "test" my Wordpress site before taking it live.
I'm going to give it a try! Hopefully it won't be too hard to move the site online when I'm finished...but I'll cross that bridge when I get there.