If you'd like to use tables in your site for displaying data there are a few ways to do this.
- The TinyMCE Advanced plugin lets you add a table tool to the WordPress Rich text editing bar.
- Use the WP-Tables Reloaded plugin - this plugin create really nice looking tables and gives you a pretty good interface for updating content. The biggest drawback to using this plugin is that it does not have a rich text editor. If you want text that is hyper-linked, bold, etc you will will need to write the HTML yourself within the plugins editor. A big benefit to using this plugin is that your tables will be much more accessible to visually impaired readers. The plugin will add the necessary mark-up to make the table more sensible to screen readers. For more informatin on using this plugin see the plugin's website at: http://tobias.baethge.com/wordpress-plugins/wp-table-reloaded-english/
- Copy and paste from Word (winows users only) - if your table is already in MS Word, go ahead and select the table and copy. From within your post a page in WordPress choose the Paste from Word Icon (on the second row - you may need to expand your available editing buttons by clicking the kitchen sink button) and paste into the provided window. Sorry Mac users (this isn't for you).