As mentioned earlier, one of Moodle's strengths is the ease with which you can install and use third party add-ons. There are a multitude of blocks, modules, and other plugins available from the Moodle.org download area that you can use to enable Moodle to perform all sorts of tasks. One word of caution on third-party blocks, modules, and other plugins; they are not maintained by Moodle headquarters and as such you should check the forums on Moodle.org for any known issues the plugin you are planning to install might have. Likewise, it is a good idea to install these types of plugins on a test site, like the one we've set up in this chapter, to experiment with them and make sure they function as desired. Once you are confident in using the features offered by a plugin and assured that it is what you want, you can install it on your production site.