Happy new year.
I'm quite content to experiment, but needing reference help. I appreciate any guidance you can provide.
Check out the PAL Scripting reference available from the help menu of the PAL IDE (and I think the generic SAM help menu as well).
It's basically a dictionary for all the available functions in PAL.
For Downloading a file you can either use WebToFile or try the THttp component. (The later is a more modern solution, but is a full-fledged HTTP library instead of a simple file download method)
CopyFile and DeleteFile are only useful for files you already have on your computer.
The PAL scripting reference also has examples for most of the included functions. They don't explain all the edge cases, but should be enough to understand the basics.