Difficulty: Moderately Easy
Step1
Visit Drupal's official website.
Step2
Click on "Download," "Modules" and "Evaluation/Rating."
Step3
Choose a rating system by reading the release notes, bug reports and "find out more" links next to the numerous rating systems offered.
Step4
Download the latest version of your preferred rating system module. If you need to download any other corresponding modules, do it at the same time.
Step5
Unzip and extract the files on your computer.
Step6
Read any installation files that come with the files.
Step7
Use the installation files to upload the rating system module into Drupal. Make sure you have your administrator access information handy before you try uploading the rating system module to Drupal.