The example leaves a blank heading above the first column as that will have the headers for the rows in it. You do not have to define widths of the cells, the browser will do that automatically. You can have many rows. End the table with . Remember that you can use the commands to put headings above the table to identify and describe it.
Tables are a problem for many of the screen reader software systems.
Avoid using tables to format text and graphics. Put a before the text and at the end and the text will be displayed as you have typed it. Here are a few ideas that may help make your site more useful to users. Analyze your audience and develop your site around their needs and abilities. Use the medium to communicate your message.