This article explains how and why you should install WordPress on your computer.
An offline version of WordPress is one where WordPress is installed locally on your computer. In order to do this you need to turn your computer into a local server. Once that is done you can then install WordPress on your home computer. Before I get into how to do this I want to briefly go through the three main advantages for installing WordPress locally on your computer.
The first and biggest advantage is that you are not working on a live website. This means you can install plugins, customize your themes and do virtually anything else to your site confident in the knowledge that if it goes wrong there is no impact on your live website.