Create your shortcode or custom WP_Query
Add the shortcode or Query to your page by adding it through the content editor or placing it directly within one of your template files.
Load a page with your code in place and Easy Query will load your posts.
Your server must be able to read/write/create files. Easy Query creates the default template on plugin activation and in order to modify the output Easy Query is required to write to the file as well.
Sure, but please be aware that if modifications are made it may affect future updates of the plugin.
Template data is saved into your WordPress database as well as written directly to a template PHP file in the easy-query-pro plugin directory.
Yes, but you will need to define $post at the top of the template before requesting your custom fields. Like so: global $post;