TableEdit makes for some friendly table editing, although its not entirely intuitive to use. Some notes to ease frustration:
Gotcha: Tables cannot be created during page creation. You can save the newtable code in the new page, but it the table won't get generated until the new page has been saved, re-opened for editing, and saved again.
To create a new table, you just need to define a series of column headings, like so:
<newTableEdit< Heading1 Heading2 Heading3 </newTableEdit<
Here is a table you can play with. If you break it, feel free to delete and start again.