MODx. Resources, templates, installing packages
The site content (page for example) in MODx terminology is resource. Every resource have got some properties, including template. We will create “Main page” resource and template.
MODX doesn’t support menu for site. For this purpose (and also for similar purposes) you need to install packages (similar to wordpress plugins or joomla components). For menu creating on MODX site you need to install Wayfinder package.