Which templates are included with the developer version? If I decide I don't want to use the included templates and want to buy a third party modification template, what is the process of installing it overtop of the default template? Is it easy to do?
Yes you can add templates from TemplateCodes which also come with a pack of very useful modules. You simply upload the templates you get in your purchased download to the templates folder and activate a few modules in the admin control panel. Link in my signature to TC and the demo site with template switcher.