Table is a main structure to keep data.
Alike to MySQL tables, it has fields and records.
To add records you need a menu item with ExtraSearch Add Item Type to be set.
To have your own design for the form use layouts.
To view records you need a menu item with ExtraSearch Add Item Type to be set.
To have your own design of catalog or table view use layouts.
To view each record you need a link from catalog item {link} and detailed page layout set.