Select Insert/Table from the menus at the top of the page. In the dialogue box, choose the number of rows and columns (1). Determine the width you need in pixels or percentage of screen. Enter a width for the borders around the outside. Cell padding is the margin within a cell. If you select zero your text will bump up right next to the edges. Two to five pixels is usually best. Cell spacing is the gap between cells.
Next, (2)decide if there will be a header row. This step is important in making calendars and providing accessibility. Last, (3) tables are notoriously difficult to understand if you are using a screen reader. To facilitate the use for special needs users a caption and summary help tremendously. The caption will appear in a regular browser but the summary will be accessible only to screen readers or someone reading the HTML. Select OK.
Once your table is selected you can edit the properties by clicking
on the outside border. The properties inspector at the bottom will
change to show all the editable features. 
You will notice that some of the features that appear in the insert box also occur here (i.e. cell padding, border, etc.) You can also change the background color (or image) and the border color.
