1 For App Enlight to operate you need to create app profile that allows you to obtain API key that one of the clients can use.
2 It is a good idea to configure an email alert channel that you can use to receive notifications about events that happen in your application.
It can be the same email account you used to register withing App Enlight - although we often recommend using separate errors@... account designated for alert notifications.
3 In order for your application to stream meaningful information you will need to integrate a compatible client for your language of choice.
Head over to developers section for information on currently available clients that you can plug into your software