In Guide 1, we installed TYPO3 and in Guide 2 we created a site. This guide introduces you extensions, the mechanism for customizing TYPO3 websites to do what you need. We extend the functionality of your demo site from Guide 2 by activating a system extension. We also install and activate a third-party extension.
This guide is aimed at those who want to see how to extend the functionality of a TYPO3 site to meet your needs.
Chapter 3 covers extensions. Extensions ...