Here’s an article from Torque written by Tom Rankin which I thought you might find of interest.

With WordPress, you can easily customize any aspect of your website, including the theme you use. However, tweaking its code directly can be risky, and you may lose your changes when you update it. Using a child theme, you run none of those risks. A child theme is basically a copy of its ‘parent’. You can set one up rather quickly.

To read more head over to Torque

Till next time,
D