At it’s most basic you’re just talking about a list of links to files (not resources).
Or, you can create new ’Static’ Resource, but you would need to alter the content types in System Settings so it understood that PPT etc were permissible extensions.
In Revo you can also use the FileLister add-on (documentation here:
http://rtfm.modx.com/display/ADDON/FileLister, which will track numbers of downloads, and restricts access to members of specific groups if you want it to.
As ever with MODX the answer is ’Yes, it can be done, in a number of ways - the best solution will vary depending on _exactly_ what you want to do and your level of expertise’.
