Wordpress Plugins
Some wordpress plugins may be usefull for you
Google Map Generator
Google Analytics
This plugin will handle you downloadable files. You can set password and set access level any of your downloadable files from your wordpress site.
You can add/embed downloadable files anywhere in the post just pasting the embed code inside your post content.
All in one FaceBook Plugins for Wordpress
This plugin can be used to communicate among the online visitor on a wordpress site
