gimp foundry fx -- tutorials? info?

Hi:
I'm a relative newcomer to Gimp and recently learned about the foundry fx package, with over 100 plugin fx. Problem is, after downloading it, that I'm finding very little info about how to use these fx! Some are obviously self-explanatory (after a bit of fiddling), but others are largely baffling to an image-editing noob like me.

I tried searching for particular foundry fx within the gimp plugin registry and found little to no info.

Anyone know of a pdf (or such) explaining these fx in details...?

Here you go

http://gimpfx-foundry.sourceforge.net/browse26/index.html

Explanation about what each script does.

Doh?

Where do I save the Fx Foundry zip file after I've downloaded it? C:\Program Files? somewhere else? Thanks in advance folks.
:D