What are tables used for?
InfoPath uses tables for layout purposes for example to hold label names, and there associated controls. A label name provides explanation for a tick box or options list, or drop down box list.
Repeating sections enable you to use the same questions repeatedly for example you might require forms for organising an event, staff meetings, perhaps you want to submit travel arrangements and or expenses.
Having viewed this video you will have sufficient insight to develop your own tables and repeating sections.