Tables in TextEdit

I need to construct a very simple table for a language-textbook. It needs 3 columns and 3 rows.

There are online-tutorials showing how to format such a table, but none of them explains how to insert such a table.

I must have wasted hours trying to sort this out -- can any kind person give me a step-by-step explanation ?

 

Thank you, I have now managed to create a satisfactory table, but I still do not really understand howTextEdit inserts it into the document.