The following links will take you directly to the installation page in Salesforce:
Important! Make sure to always install “For Admins Only”.
If you receive an error that the install is failing because of ‘(Booker25EmailTemplates) To create email template folders, enable Folders and Enhanced Sharing.’, please follow these steps.
If you are installing this in a new environment, please make sure to follow the following steps: GoMeddo Clean Install