Macros 101...?

Yes, I searched...  No, I did not find that one definitive thread that was my "Easy Button".

I want/need to learn how to "use" Macros.

I've written code for Autodesk (.lsp) for eons, or in other words - I know how to "Copy / Paste / Tweak" like mad man!  That said, I can make sense of the great code a few cool peeps have sent me and easily recognize the variables to alter accordingly.  The problem is - I need a primer that will show me "where to put 'em, how to invoke them, how to manage them, etc."

I'm NOT looking to have my hand held here...  Just looking for a solid tutorial, or perhaps that ellusive 'go-to thread' one of ya'll will steer me to!

Thanks in advance for those who take the time out of their day for others they'll probably never meet or know...!  (Those are the true mentors).

Hasta Lasagna...  Don't get any on ya...!