A very good solution for creating tabs within your posts and pages is the following plugin:

WordPress Tabs Slides

It enables you to easily separate your content into tabs by using the following code:

{tab=Tab 1}
Contents Tab 1
{tab=Tab 2}
Contents Tab 2
{/tabs}

You can also use Sliders with this plugin, but I won’t go into it here.

Another plugin which does pretty much the same thing but has some more options is:

postTabs

This allows you to use the same functionality as the previous plugin but also gives you an interface of options from which you can select the colours to be used used for active tabs, and gives you a preview. The syntax to use is slightly different but on the same principle:

Contents Tab 1

Contents Tab 2

Tabbed Posts – Another plugin that does basically the same thing as the two above, just putting it down here for completeness’ sake.

There are also other manual methods (not using a plugin) to do this, which are summarised here:

http://www.paulspoerry.com/2009/03/24/top-5-wordpress-tab-systems/