Getting set up
As this chapter covers features provided by both core modules and contributed modules (which need to be downloaded first), let's download and enable the modules first, saving us the need for continually downloading and enabling modules throughout the chapter.
The modules which we will require are:
Tracker (core module)
Gravatar (can be downloaded from: http://drupal.org/project/gravatar)
Follow (can be downloaded from: http://drupal.org/project/follow)
Field_collection (can be downloaded from: http://drupal.org/project/field_collection)
Entity (can be downloaded from: http://drupal.org/project/entity)
Trigger module (core module)
These modules can be downloaded and then the contents extracted to the /sites/all/modules folder within our Drupal installation. Once extracted they will then be ready to be enabled within the Modules section of our admin area.
