Downloading Plug-ins on Mac

Good Morning,

 

This is my first post ever. ; Yes, I am a newbie.  I'd first off like to say that I am very excited that I found this group, as I would like to learn more on the art of using GIMP.

 

Here's my question:

 

How do I download plug-ins to my Mac.  I figured out how to download and install script-fu's, but i am a little confused on the other plug-ins.  Anyone want to offer an answer?

 

Thanks!

 

Wendy